Updated on 2026/09/30

写真a

 
FUJITA HIDEAKI
 
Organization
School of Engineering Professor
Title
Professor
Homepage
http://www.akg.ee.titech.ac.jp/
External link

News & Topics

Degree

  • Master of Engineering ( Nagaoka University of Technology )

  • Doctor of Engineering ( Tokyo Institute of Technology )

Research Interests

  • Power Electronics and Electrical Machinery

Research Areas

  • Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Power engineering

Education

  • Nagaoka University of Technology   Graduate School, Division of Engineering

    - 1991

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    Notes： Doctor course Withdrawn before completion

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  • Nagaoka University of Technology   Graduate School, Division of Engineering

    - 1990

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    Notes： Master course Completed

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  • Nagaoka University of Technology   Faculty of Engineering

    - 1988

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    Country： Japan

    Notes： Graduated

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Research History

  • Tokyo Institute of Technology   Professor

    2018.4

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  • Tokyo Institute of Technology   Graduate School of Science and Engineering   Associate Professor

    2002

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  • Okayama University   Faculty of Engineering   Research Associate

    1991 - 2001

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Professional Memberships

Papers

  • Comparison of Voltage Control Methods for a T-type Three-level Half-bridge Rectifier International journal

    Kohei Nakajima, Hideaki Fujita, Naoya Yamashita, Takayuki Fujita

    2026.6

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    Language：English   Publishing type：Research paper (international conference proceedings)  

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  • A New Control Method for DAB Converters with an Extended Input Voltage Range International journal

    Toshiki Kawai, Hideaki Fujita

    2026.6

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    Language：English   Publishing type：Research paper (international conference proceedings)  

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  • Control and Analysis of DAB Converters Under a Low Suply Voltage Condition

    Toshiki Kawai, Hideaki Fujita

    Proceedings of the 2026 Annual Meeting IEE of Japan   2026.3

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

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  • Ripple Reduction Method of Intermittent Operation for Dual-Active-Bridge (DAB) Converter

    Toshiki Kawai, Hideaki Fujita, Takuya Satou

    Vol. 26 ( No. 004 )   13 - 18   2026.1

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)   Publisher：The Institute of Electrical Engineers of Japan  

    【要旨(英語)】 This paper proposes a new intermittent operation method for DAB converters to reduce the output voltage ripples.
    The proposed method inserts interval in every half cycle of continuous operating frequency, resulting in a double the ripple frequency compared with a conventional intermittent operation.
    Circuit simulation results confirm the viability of the proposed method.

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  • High Efficiency Voltage Doubler Rectifier using T-type NPC Circuit

    Kohei Nakajima, Hideaki Fujita, Naoya Yamashita, Takayuki Fujita

    2025 IEE-Japan Industry Applications Society Conference   vol. 1   437 - 440   2025.8

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)   Publisher：The Institute of Electrical Engineers of Japan  

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  • 車両ECUの熱設計における1Dソレノイドアクチュエータモデルの提案とその汎用性検証 Reviewed

    稲葉雅司, 中溝 裕己, 土方 亘, 藤田 英明, 伏信 一慶, Pham Viet Anh, 萩原志皇, 井上 啓太, 安井 龍太, 篠田 卓也, 近江慶太

    2025.5

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

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  • 車載電磁アクチュエータの温度特性によるパワー半導体への熱影響の評価 Reviewed

    中溝 裕己, 稲葉 雅司, 土方 亘, 藤田 英明, 伏信 一慶, Pham Viet Anh, 井上 啓太, 安井 龍太, 篠田 卓也, 近江 慶太

    2025.5

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

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  • エレメカ連成1Dモデルを用いたTier1，Tier2サプライヤの連携による回路解析手法の精度検証 Reviewed

    稲葉雅司, 中溝裕己, 上田雅生.池田佳子, 江上孝夫, 向山大索, 有賀善紀, 土方亘, 藤田英明, 篠田卓也

    2025.5

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  • Loss Evaluation of Cell Capacitor with Quasi-unipolar Modulation for Modular Multilevel Cascade Converter-based Active Power Filter Reviewed International journal

    Takuro Arai, Hiroshi Mochikawa, Kenichiro Sano, Hideaki Fujita

    Proc. of IEEE Energy Conversion Congress and Expo Europe (ECCE Europe 2024)   1 - 7   2024.9

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    This paper evaluates a reduction of cell capacitor loss with quasi-unipolar modulation for modular multilevel cascade converter-based active power filter (MMCC-APF). This modulation method uses the same PWM controller with a traditional bipolar modulation method. The generated PWM signals are interchanged among the bridge cells, resulting in a reduction of the cell capacitor ripple current without increasing the number of PWM channels. In a low-voltage application of MMCCs, this is important to reduce the cost of the control circuit and the size of the cell capacitors utilizing electrolytic capacitors. An experimental system of a 3.3 kVA MMCC-APF achieves to reduce the power loss by 38% and the capacitor temperature rise by 18%.

    DOI： 10.1109/ecceeurope62508.2024.10751912

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  • New Modulation Method to Reduce Cell Capacitor Ripple Current in Modular Multilevel Cascade Converters and its Application to Active Power Filters Reviewed

    Takurou Arai, Hiroshi Mochikawa, Kenichiro Sano, Hideaki Fujita

    IEEJ Transactions on Industry Applications   vol. 143 ( no. 8 )   590 - 599   2023.8

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：IEE Japan  

    This paper proposes a new modulation method for modular multilevel cascade converter-based active power filters (MMC-APFs). The proposed modulation method uses the same pulse width modulation (PWM) controller as a traditional bipolar modulation method, and the generated PWM signals are interchanged among the bridge cells. This method makes it possible to shift the carrier phase angle between two switching legs in one cell, reducing the ripple current through the cell capacitor without increasing the number of PWM channels. This is important to reduce the cost of the control circuit, especially in low-voltage applications of MMCs. An experimental circuit of a 3.3kVA MMC-APF demonstrates a 20% reduction in the ripple current and a 38% reduction in the power loss in the cell capacitor.

    DOI： 10.1541/ieejias.143.590

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  • Switching Loss Evaluation in a Three-Phase Diode Rectifier with an Instantaneous Reactive Power Compensator Reviewed International journal

    Surasak Nuilers, Hideaki Fujita, Burin Khemthong

    2022.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

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  • Switching Loss Reduction Method for Instantaneous Reactive Power Compensator in Three-Phase Rectifier System Reviewed International journal

    Nuilers Surasak, Hideaki Fujita

    IEEE Journal of Emerging and Selected Topics in Power Electronics   vol. 11 ( no. 2 )   1518 - 1529   2022.10

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

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  • A Feedback Control method of Capacitor Voltage Sharing in Two DAB Converters Connected in Series on both Input and Output Sides

    N TAGUCHI, H AYANO, 張 正, 平木 元博, 藤田 英明

    vol. 1 ( no. 35 )   2022.9

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)   Publisher：電気学会  

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  • Current ripple reduction method in a three-phase diode rectifier with an instantaneous reactive power compensator Reviewed International journal

    Nuilers Surasak, Hideaki Fujita

    IEEE Transactions on Industry Applications   2022.3

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

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  • Evaluation of Required Energy Storage in Neutral-Point-Clamped Modular Multilevel Converter for Downsizing Low-Voltage Grid Converters Reviewed International journal

    Takuro Arai, Kei Sekiguchi, Hiroshi Mochikawa, Kenichiro Sano, Hideaki Fujita

    IEEE Transactions on Power Electronics   Vol. 36 ( No. 6 )   6774 - 6786   2021.6

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    This article clarifies a required energy storage in a neutral-point-clamped modular multilevel converter (NPC-MMC) based on a theoretical analysis and an experimental verification to enable quantitative comparison of the size of the capacitors. The NPC-MMC consists of both a three-level structure with common dc capacitors and chopper cells. It can reduce the number of the chopper cells by half comparing to the conventional MMC. The theoretical analysis reveals that the NPC-MMC directly transfers a part of its power from the dc capacitors to the ac grid, whereas the conventional MMC transfers all of its power by way of the cells. Therefore, the NPC-MMC can reduce its required energy storage by almost half comparing to the MMC. Moreover, the NPC-MMC can further reduce its energy storage by injecting harmonic currents to its circulating current despite still smaller arm currents than the MMC. A 200-V 10-kVA experimental circuit using low-voltage MOSFETs validates the analysis and demonstrates that the NPC-MMC can achieve both downsizing and high efficiency.

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  • Loss Reduction of Modular Multilevel Converter with Balancing Circuit for Low-Voltage Grid Converter Reviewed

    Takuro Arai, Kei Sekiguchi, Hiroshi Mochikawa, Kenichiro Sano, Hideaki Fujita

    IEEJ Transactions on Industry Applications   vol. 141 ( no. 6 )   461 - 471   2021.6

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：The Institute of Electrical Engineers of Japan  

    This study proposes a modular multilevel converter by applying a balancing circuit with a resistor for a low-voltage grid converter. The proposed balancing circuit, which is controlled by the same gate signal as that of the main switch, can reduce the loss of the additional balancing circuit and the current rating of the balance switch without the need for additional the cell capacitors. Only one voltage sensor per converter arm is required to automatically balance the cell capacitor voltages. The experimental results indicate that the cell capacitor voltages are well balanced during a rated operation of 10kW and a high efficiency of up to 99.2% is achieved, which is almost the same as that without a balancing circuit.

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  • DC current control of a zero-sequence load using a diode rectifier for a three-phase four-wire motor drive system Reviewed

    Yusuke FUJII, Junichi ASAMA, Akira CHIBA, Hideaki FUJITA

    Transactions of the Japan Society of Mechanical Engineers   Vol. 86 ( No. 890 )   2020.10

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  • Light-Load Switching-Loss Elimination Utilizing Pulse Density Modulation for Switched-Capacitor-Based Resonant Converters Reviewed International journal

    Hideaki Fujita, Hadi Setiadi

    4734 - 4740   2019.9

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    Language：Japanese   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/ECCE.2019.8912624

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  • 零相電流を用いた磁気浮上モータシステムにおけるダイオード整流回路による浮上直流バイアス電流制御

    藤井勇介, 朝間淳一, 千葉明, 藤田英明

    2019.5

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  • Implementation of a Miniaturized SiC Inverter Reviewed International journal

    Hideaki Fujita, Cristian Andres Garces Guajardo

    International Power Electronics Conference   1854 - 1859   2019.5

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEJ  

    DOI： 10.23919/IPEC.2018.8507841

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  • Zero-voltage switching single-phase grid-connection inverter consisting of cascaded buck-boost converters

    Tomoya Hirose, Daiki Yamaguchi, Hideaki Fujita

    SPC-19-32   2019.1

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)  

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  • System Efficiency Analysis Method of Low-Voltage Three-Phase Grid Connected PV Converter under an MPPT Control Condition

    Daiki Yamaguchi, Hideaki Fujita

    SPC-19-38   2019.1

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  • Load Voltage Regulation Method for an Isolated AC-DC Converter with Power Decoupling Operation Reviewed International journal

    Hideaki Fujita, Shohei Komeda

    International Power Electronics Conference   3813 - 3819   2019

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEJ  

    DOI： 10.23919/IPEC.2018.8506667

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  • A New PV Converter for a High-Leg Delta Transformer Using Cooperative Control of Boost Converters and Inverters Reviewed International journal

    Daiki Yamaguchi, Hideaki Fujita

    IEEE Transactions on Power Electronics   vol. 33 ( no. 11 )   9542 - 9550   2018.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1109/TPEL.2018.2791343

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  • A Burst-Mode Control Method for Phase-Shift Controlled Switched-Capacitor-Based Resonant Converters Reviewed International journal

    Hadi Setiadi, Hideaki Fujita

    IEEE Energy Conversion Congress and Exposition   4863 - 4869   2018.9

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/ECCE.2018.8557839

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  • A New Control Method of Suppressing DC Capacitor Voltage Ripples Caused by Third-Order Harmonic Compensation in Three-Phase Active Power Filters Reviewed International journal

    Tomoyuki Mannen, Issei Fukasawa, Hideaki Fujita

    IEEE transactions on industry applications   vol. 54 ( no. 6 )   6149 - 6158   2018.6

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/TIA.2018.2849751

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  • Experimental Verification of Grid-Connection of a PV Converter Using a Symmetrically Connected Boost Converter for a High-Leg Delta Transformer Reviewed International journal

    Daiki Yamaguchi, Hideaki Fujita

    3940 - 3944   2018.5

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  • Accuracy Comparison of Present Low-cost Current Sensors for Building Energy Monitoring Reviewed International journal

    Ruengwit Khwanrit, Somsak Kittipiyakul, Jasada Kudtonagngam, Hideaki Fujita

    International Conference on Embedded Systems and Intelligent Technology & International Conference on Information and Communication Technology for Embedded Systems   2018.5

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/ICESIT-ICICTES.2018.8442066

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  • Missing Value Estimation of Energy Consumption of Multi-Unit Air Conditioners using Artificial Neural Networks Reviewed International journal

    Paradorn Pimporn, Somsak Kittipiyakul, Jasada Kudtongngam, Hideaki Fujita

    International Conference on Embedded Systems and Intelligent Technology & International Conference on Information and Communication Technology for Embedded Systems   2018.5

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    Language：English   Publishing type：Research paper (international conference proceedings)  

    DOI： 10.1109/ICESIT-ICICTES.2018.8442059

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  • Control and Performance of New Asymmetrical Operation for Switched-Capacitor-based Resonant Converters Reviewed International journal

    Hadi Setiadi, Hideaki Fujita

    International Power Electronics Conference   626 - 631   2018.5

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEJ  

    DOI： 10.23919/IPEC.2018.8507581

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  • Experimemtal Verification of Power Loss Estimation in an Inverter Considering DC-Voltage Ripple

    Daiki Yamaguchi, Hideaki Fujita

    Vol. 4 ( No. 65 )   106 - 107   2018.3

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  • Experimental Verification of Validity of Polynomial Approximation of Power Losses in a Power Device

    Daiki Yamaguchi, Hideaki Fujita

    Vol. 4 ( No. 5 )   7 - 8   2018.3

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  • A Power Decoupling Control Method for an Isolated Single-Phase AC-to-DC Converter Based on Direct AC-to-AC Converter Topology Reviewed International journal

    Shohei Komeda, Hideaki Fujita

    IEEE Transactions on Power Electronics   vol. 33 ( no. 11 )   9691 - 9698   2018.1

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/TPEL.2017.2712281

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  • Dynamic Control and Performance of a Dual-Active-Bridge DC-DC Converter Reviewed

    Takagi, K., Hideaki Fujita

    IEEE Transactions on Power Electronics   33 ( 9 )   7858 - 7866   2018

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    DOI： 10.1109/TPEL.2017.2773267

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  • A Three-Phase Grid-Connected Inverter Equipped with a Shunt Instantaneous Reactive Power Compensator Reviewed International journal

    Kazuto Takagi, Hideaki Fujita

    2017 IEEE Energy Conversion Congress and Exposition (ECCE)   1 - 7   2017.10

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    This paper introduces a three-phase grid-connected inverter for commercial-scale photovoltaic systems. The circuit topology combines an electrolytic-capacitor-less and ac-inductorless active bridge with a parallel-connected PWM inverter acting as an instantaneous reactive power compensator. The active bridge, called a 120◦-conduction inverter, operates at the switching frequency equal to the grid frequency and outputs 120-degree rectangular currents, while the compensator eliminates the harmonic currents included in the rectangular currents. The main
    advantage of this strategy is the reduction in size of the required ac inductor by a factor of four as well as the reduction of power losses in the switching devices. The theoretical analysis clearly shows that the compensator can synthesize a sinusoidal output current by controlling only instantaneous reactive power, thus eliminating the need for electrolytic capacitors. This paper also discusses the required dc capacitor and a current control delay in the compensator paying attention to practical applications. A 5-kW experimental setup validates the operating principle and the control method of the proposed inverter and exhibits an inverter efficiency as high as 99.2% with Si super-junction MOSFETs.

    DOI： 10.1109/ECCE.2016.7854713

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  • Output voltage regulation of an isolated single-phase ac-to-dc converter using direct power conversion

    Shohei Komeda, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 18 )   159 - 162   2017.8

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)   Publisher：Institute of Electrical Engineering in Japan  

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  • Experimental demonstration of grid connection control of a PV converter for a high-leg delta transformer using a symmetrically-connected boot converter

    Daiki Yamaguchi, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 123 )   545 - 548   2017.8

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)   Publisher：Institute of Electrical Engineering in Japan  

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  • Power decoupling control method for an isolated single-phase ac-to-dc converter based on high-frequency cycloconverter topology Reviewed International journal

    Shohei Komeda, Hideaki Fujita

    2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)   1059 - 1064   2017.6

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/IFEEC.2017.7992188

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  • A new PV converter for grid connection through a high-leg delta transformer using cooperative control of boost converters and inverters Reviewed International journal

    Daiki Yamaguchi, Hideaki Fujita

    2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia)   911 - 916   2017.6

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    DOI： 10.1109/IFEEC.2017.7992162

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  • A Phase-Shift-Controlled Direct AC-to-AC Converter for Induction Heaters Reviewed International journal

    Shohei Komeda, Hideaki Fujita

    Transactions on power electronics   vol. 33 ( no. 5 )   4115 - 4124   2017.6

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/TPEL.2017.2712281

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  • Analysis of loss reduction effect on a PV inverter for high-leg delta transformer using a symmetrically-connected boost converter

    Daiki Yamaguchi, Hideaki Fujita

    Vol. 4 ( No. 191 )   334 - 335   2017.3

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  • On-state power loss reduction in an isolated single-phase ac-to-ac converter based on high-frequency cycloconverter topology

    Shohei Komeda, Hideaki Fujita

    Vol. 4 ( No. 086 )   144 - 145   2017.3

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  • Reduction of current distortion in a three-phase grid-connected inverter equipped with a shunt instantaneous reactive power compensator

    Kazuto Takagi, Hideaki Fujita

    Vol. 4 ( No. 094 )   156 - 157   2017.3

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  • A New Control Method of Suppressing the DC-Capacitor Voltage Ripple Caused by Third-Order Harmonic Compensation in Three-Phase Active Power Filters Reviewed

    Tomoyuki Mannen, Issei Fukasawa, Hideaki Fujita

    IEEJ Trans. IA   vol. 137 ( no. 2 )   141 - 147   2017.2

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineering in Japan  

    This paper proposes a new control method suitable for active power filters, which can reduce the dc capacitor voltage ripple associated with the third-order harmonic current compensation. The proposed method superimposes a negative-sequence fundamental current on the compensating current to cancel out the active power ripple caused by the third-order harmonic current. As a result, the proposed method has the capability to eliminate the dc capacitor voltage ripple oscillating at double the source frequency. Experimental results obtained by a 10-kW three-phase diode rectifier load verify the validity of the proposed method. The proposed method exhibits a small dc capacitor voltage ripple reduced to 43% of that using the conventional method.

    DOI： 10.1541/ieejias.137.141

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  • 瞬時無効電力補償装置を並列接続した三相整流回路

    中山暁斗, 高木一斗, 萬年智介, 藤田英明

    電気学会研究会資料   ( no. SPC-17-048 )   2017.1

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    Language：Japanese   Publishing type：Research paper (conference, symposium, etc.)   Publisher：電気学会  

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  • 交流インダクタレス三相／単相電力変換器による誘導発電機の制御法

    高橋紀光, 藤田英明

    電気学会研究会資料   ( no. SPC-17-037 )   2017.1

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  • A DC Capacitor Voltage Control Method for Active Power Filters Using Modified Reference Including the Theoretically Derived Voltage Ripple Reviewed International journal

    Tomoyuki Mannen, Hideaki Fujita

    IEEE Transactions on Industry Applications   vol. 52 ( no. 5 )   4179 - 4187   2016.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1109/TIA.2016.2574854

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  • A New PV Converter for Grid Connection through a High-Leg Delta Transformer Using Cooperative Control of Boost Converters and Inverters Reviewed

    Daiki Yamaguchi, Hideaki Fujita

    IEEJ Trans. IA   vol. 136 ( no. 9 )   655 - 661   2016.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineering in Japan  

    This paper proposes a new high-efficiency PV converter for grid connection through a high-leg delta transformer, which is composed of a symmetrically-connected boost converter and three half-bridge inverters. One of the three half-bridge inverters is connected to the boost converter, and the others are directly connected to the PV terminals. This circuit configuration enables to reduce the power losses in both boost converter and inverter. This paper also proposes a new cooperative control method between the symmetrically-connected boost converter and inverter. The control method can reduce the average switching frequency to 75% of that in a conventional one, resulting in a great reduction in switching power loss. Experimental results show that the proposed circuit improves its European efficiency from 91.6% to 94.5%.

    DOI： 10.1541/ieejias.136.655

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  • Dynamic Control and Performance of an Isolated Dual-Active-Bridge DC-DC Converter Reviewed

    Kazuto Takagi, Hideaki Fujita

    IEEJ Trans. IA   vol. 136 ( no. 9 )   622 - 628   2016.9

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    Language：Japanese   Publishing type：Research paper (scientific journal)   Publisher：Institute of Electrical Engineering in Japan  

    This paper presents dynamic analysis and control of an isolated dual-active-bridge (DAB) dc-dc converter. Conventional control methods for the DAB converter may cause dc offsets in both inductor current and transformer magnetizing current in transient states. The dc offset in the inductor current introduces an excessive peak current through the switching devices. The dc offset in the magnetizing current cannot be neglected and may induce magnetic flux saturation. Conventional phase-shift control methods simultaneously turn on and off the diagonal switches in each H-bridge converter to produce a square-wave voltage with a 50% duty ratio. In contrast, the proposed method independently controls the diagonal switches to modify the duty ratios in transient states. The theoretical analysis derives the requirements of the switching angles for eliminating dc offsets in both inductor and magnetizing currents with a settling time as short as half a switching period. The results of experiments using a 5-kW, 20-kHz experimental system verify the validity of the proposed control method.

    DOI： 10.1541/ieejias.136.622

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  • A new control method of suppressing DC-capacitor voltage ripples caused by third-order harmonic compensation in three-phase active power filters Reviewed International journal

    Tomoyuki Mannen, Issei Fukasawa, Hideaki Fujita

    2016 IEEE Energy Conversion Congress and Exposition (ECCE)   1 - 7   2016.9

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEE  

    This paper proposes a new control method suitable for active power filters to reduce the dc capacitor voltage ripples associated with the third-order harmonic current compensation. The proposed method superimposes a negative-sequence fundamental current on the compensating current to cancel out the active power ripple caused by the third-order harmonic current. As a result, the proposed method has the capability to eliminate the dc capacitor voltage ripple at double the source frequency. Experimental results obtained by a 10-kW three-phase diode rectifier verify the validity of the proposed method. The proposed method exhibits a good suppression performance of the dc capacitor voltage ripple at double the source frequency.

    DOI： 10.1109/ECCE.2016.7854713

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  • Experimental verification of an AC-to-AC direct power converter using power decoupling control method

    Shohei Komeda, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 53 )   177 - 180   2016.8

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  • A High-Frequency Cycloconverter Based on a Phase-Shift Control Method Reviewed

    Shohei Komeda, Hideaki Fujita

    IEEJ Trans. IA   vol. 136 ( no. 6 )   433 - 440   2016.6

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    This paper proposes a new control method for a high-frequency cycloconverter consisting of two half-bridge inverters and a series-resonant circuit. This cycloconverter acts as an ac-to-ac direct power conversion circuit without any dc stage. This circuit does not require a diode bridge rectifier, and thus, can be used to reduce forward voltage drops and power losses in the diodes. A new phase-shift control method is proposed to regulate the capacitor voltage in each half-bridge inverter and to achieve zero-voltage switching. The proposed phase-shift control is theoretically discussed and is also verified by an experimental circuit consisting of super-junction power MOSFETs. As a result, the proposed high-frequency cycloconverter exhibits a good power conversion efficiency as high as 97.7% at the rated power of 1.3kW.

    DOI： 10.1541/ieejias.136.433

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  • Combined frequency and phase-shift control for switched-capacitor-based resonant converter Reviewed International journal

    Hadi Setiadi, Hideaki Fujita

    2016 IEEE 8th International Power Electronics and Motion Control Conference (IPEMC-ECCE Asia)   1 - 8   2016.5

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    DOI： 10.1109/IPEMC.2016.7512778

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  • A power decoupling control method for high-frequency cycloconverter

    Shohei Komeda, Hideaki Fujita

    Vol. 4 ( No. 76 )   128 - 129   2016.3

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  • 瞬時無効電力補償装置を並列接続した三相系統連系インバータの損失低減効果

    高木一斗, 中山暁斗, 萬年智介, 藤田英明

    電気学会研究会資料   ( no. SPC-16-049 )   2016.3

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  • A new control method for dynamic voltage restorer using six cascaded converter under voltage sag condition

    Yu Tanaka, Hideaki Fujita

    Vol. 4 ( No. 61 )   101 - 102   2016.3

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  • Stability analysis of Isolated dual active bridge DC-DC converter

    Kazuto Takagi, Hideaki Fujita

    Vol. 4 ( No. 91 )   154 - 155   2016.3

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  • Grid connecting operation of a PV converter with asymmetrically-connected boost converter for high-leg delta transformer

    Daiki Yamaguchi, Hideaki Fujita

    Vol. 4 ( No. 162 )   273 - 274   2016.3

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  • A performance verification of DC capacitor voltage control methods for active power filters equipped with a small DC capacitor

    Tomoyuki Mannen, Hideaki Fujita

    Vol. 4 ( No. 154 )   258 - 259   2016.3

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  • A new voltage sag compensator using six cascaded converters

    Hideaki Fujita, Yu Tanaka

    Vol. 4 ( No. 135 )   225 - 226   2016.3

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  • A New PV Converter for Grid-Connection through a High-Leg Delta Transformer Using Cooperative Control of Boost Converters and Inverters

    Daiki Yamaguchi, Hideaki Fujita

    ( no. SPC-16-011 )   2016.1

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  • Performance of Dead-Time Compensation Methods in Three-Phase Grid-Connection Converters Reviewed

    Tomoyuki Mannen, Hideaki Fujita

    IEEJ Trans. IA   vol. 136 ( no. 1 )   46 - 53   2016.1

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    This paper discusses the performance of compensation methods for dead-time voltage error in voltage-source grid-connection PWM converters. The theoretical analysis in this paper reveals the relationship between the voltage error and the current ripples through the converter. The analytical results imply that the voltage error is strongly affected by the amplitude of the current ripples as well as the source power factor. This paper proposes a new compensation method which makes it possible to use two lookup tables to reduce the calculation time in the controller. The compensation characteristics are compared by using a 200-V 5-kW three-phase grid-connection converter. As a result, conventional approximation-based compensation methods exhibit an acceptable performance in a restricted power-factor operation range. In contrast, the turn-off transition-based compensation method and the proposed method have a good compensation performance all over the power-factor.

    DOI： 10.1541/ieejias.136.46

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  • Energy Harvesting from Ammonia Gas Treatment Tank in Organic Fertilizer Powder Plant Reviewed International journal

    Chottirapong, K., Manatrinon, S., Kaemarungsi, K., Hideaki Fujita, Kwankeo, N.

    Procedia Computer Science   86   337 - 340   2016

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    DOI： 10.1016/j.procs.2016.05.091

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  • A DC capacitor voltage control method for active power filters using modified reference including the voltage ripple derived from a theoretical analysis Reviewed International journal

    Tomoyuki Mannen, Hideaki Fujita

    2015 IEEE Energy Conversion Congress and Exposition (ECCE)   5173 - 5179   2015.9

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    This paper proposes a new dc capacitor voltage
    control method suitable for active power filters equipped with a
    small dc capacitor. The proposed control method calculates the
    theoretical energy stored in the dc capacitor and provides it to the
    dc capacitor voltage feedback controller as its energy reference.
    As a result, the proposed method has capability to regulate the
    mean value of the dc capacitor voltage without any degradation
    in harmonic compensation even when a small dc capacitor and
    a high feedback gain are applied. Furthermore, application of
    a high feedback gain to the proposed method makes it possible
    to suppress the capacitor voltage fluctuations effectively without
    any performance deterioration in the harmonic compensation.
    Experimental results confirm a good harmonic compensating
    performance when applying a high-gain feedback controller to
    an active power filter with a small dc capacitor. The results also
    demonstrate a significant improvement in the capacitor voltage
    regulation even when a sudden load change occurs.

    DOI： 10.1109/ECCE.2015.7310388

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  • Improved dynamic response for a power flow direction change in an isolated dual-active-bridge DC-DC converter

    Kazuto Takagi, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 56 )   255 - 260   2015.9

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  • A DC capacitor voltage control method based on energy ripple estimation for active power filters equipped with a small dc capacitor

    Tomoyuki Mannen, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 104 )   423 - 428   2015.9

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  • Dynamic control and dead-time compensation method of an isolated dual-active-bridge DC-DC converter Reviewed International journal

    Kazuto Takagi, Hideaki Fujita

    2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)   1 - 10   2015.9

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    This paper presents dynamic control and a dead-time compensation method of an isolated dual-activebridge
    (DAB) dc–dc converter. Conventional phase-shift control methods for the DAB converter may
    cause dc offsets in both inductor current and transformer magnetic flux density in transient states. The
    dynamic control method in this paper independently controls the diagonal switches in each H-bridge
    converter to modify the duty ratios in transient states. This method enables both inductor current and
    transformer magnetic flux density to be settled within a half switching period without any dc offsets.
    Moreover, the phase-shift error caused by the dead time is analyzed in terms of the switching angle.
    This analysis reveals that the dead time causes the switching-angle error in only one of the two H-bridge
    converters and may cause dc offsets. A new dead-time compensation method based on this analysis is
    proposed to eliminate the dc offsets and to achieve a good dynamic response. A 5-kW experimental
    system verifies the validity of the proposed control method.

    DOI： 10.1109/EPE.2015.7309323

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  • A new non-characteristic harmonic compensation method in three-phase active power filters equipped with a small DC capacitor Reviewed International journal

    Tomoyuki Mannen, Hideaki Fujita

    2015 17th European Conference on Power Electronics and Applications (EPE'15 ECCE-Europe)   1 - 10   2015.9

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    This paper proposes a new control method suitable for active power filters equipped with a small
    dc capacitor. The proposed method can achieve not only suppressing the dc capacitor voltage
    fluctuation in transient states but also compensating all harmonic components in steady states.
    The proposed method employs a harmonic detection method based on the 7-step compensator
    and a repetitive controller with a comprehensive harmonic detection method. The experimental
    results using the active power filter with a small dc capacitor of 300-µF have confirmed that the
    proposed method has the capability to compensate non-characteristic harmonics produced by a
    15-kW diode rectifier in steady states without any voltage fluctuations in transient states.

    DOI： 10.1109/EPE.2015.7309305

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  • Induction Motor Drive Systems for Centrifuges where the PWM Inverter Performs the DC-Voltage Feedback Control

    Issei Fukasawa, Hideaki Fujita

    ( no. SPC-15-129 )   2015.8

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  • Dynamic control and performance of an isolated dual-active-bridge DC–DC converter Reviewed International journal

    Kazuto Takagi, Hideaki Fujita

    2015 9th International Conference on Power Electronics and ECCE Asia (ICPE-ECCE Asia)   1521 - 1527   2015.7

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    This paper presents dynamic analysis and control of an isolated dual-active-bridge (DAB) dc-dc converter. Conventional control methods of the DAB converter may cause dc offsets in both inductor current and transformer magnetizing current in transient states. The dc offset in the inductor current introduces an excessive peak current through the switching devices. The dc offset in the magnetizing current cannot be neglected and may induce magnetic flux saturation. Conventional phase-shift control methods simultaneously turn on and off the diagonal switches in each H-bridge to produce a square-wave voltage. On the other hand, the proposed method independently controls diagonal switches to generate short zero-voltage periods in a transient state. The theoretical analysis derives the requirements of the switching angles, which enable both inductor and magnetizing currents to be settled within a half switching period without any dc offset. A 5-kW experimental system verifies the validity of the proposed control method.

    DOI： 10.1109/ICPE.2015.7167980

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  • Power Flow Analysis and DC-Capacitor Voltage Regulation for the MMCC-DSCC Reviewed International journal

    Hideaki Fujita, Makoto Hagiwara, Hirofumi Akagi

    Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)   Vol. 193 ( Issue 1 )   1 - 9   2015.6

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    DOI： 10.1002/eej.22463

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  • A DC capacitor voltage control method based on voltage ripple estimation for active power filters

    Tomoyuki Mannen, Hideaki Fujita

    Vol. 4 ( No. 165 )   274 - 275   2015.3

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  • Dynamic Control and Performance of an Isolated Dual-Active-Bridge DC-DC Converter

    Kazuto Takagi, Hideaki Fujita

    ( no. SPC-15-060 )   2015.1

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  • A New Control Method for Reduction of Power Losses on an AC-Inductor-Less Three-Phase to Single-Phase Converter

    Koutarou Tanaka, Hideaki Fujita

    ( no. SPC-15-053 )   2015.1

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  • Improvement of Transient Response in Shunt Active Power Filter Based on Source Current Detection by Using a Load Current Estimation

    Tomoyuki Mannen, Hideaki Fujita

    ( no. SPC-15-001 )   2015.1

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  • A new control method for a power flow controller using six cascaded converters under voltage imbalance conditions

    Ryoji Tsuruta, Hideaki Fujita

    ( no. SPC-15-034 )   2015.1

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  • An Application of a Physics-based IGBT Model to a Protection Circuit for Short-Circuit Conditions Reviewed

    Shoji Okamoto, Takeshi Horiguchi, Shinji Tominaga, Tadashi Nishimura, Hideaki Fujita, Hirofumi Akagi, 木ノ内伸一, 大井健史

    IEEJ Trans. IA   vol. 134 ( no. 10 )   853 - 862   2014.10

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    This paper presents a protection circuit for a fault under load (FUL). The protection circuit is characterized by the reverse transfer capacitance characteristic of IGBTs. The reverse transfer capacitance depends on the collector-emitter voltage and has a significant influence on the switching behavior under short-circuit conditions and normal conditions. An FUL is detected by monitoring a gate current because the current flows through the reverse transfer capacitance of IGBTs from the collector terminal to the gate terminal under FUL conditions. A physics-based IGBT model shows high accuracy for both static and dynamic characteristics, making it useful for developing a protection circuit for IGBTs subjected to short-circuit conditions. Simulated results using the physics-based IGBT model and experimental results verify the validity of the proposed protection circuit.

    DOI： 10.1541/ieejias.134.853

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  • Shunt Active Power Filter based on Source Current Detection with a Fast Transient Response Reviewed International journal

    Tomoyuki Mannen, Hideaki Fujita

    5639 - 5646   2014.9

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  • Photovoltaic Power Conversion Circuit using a Symmetric Boost Converter for Low-voltage Distribution Systems Reviewed International journal

    Hideaki Fujita, Ryosuke Amma

    5607 - 5612   2014.9

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  • Analysis of power losses in semiconductor switching devices

    Yuuki Itogawa, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 42 )   203 - 208   2014.8

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  • Voltage ripple estimation in inductor-less AC-to-AC converter for multi-pole permanent magnet synchronous generators

    Koutarou Tanaka, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 54 )   247 - 252   2014.8

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  • A new suppression method of dc-capacitor voltage ripples caused by third harmonic compensation in three-phase active power filters

    Issei Fukasawa, Tomoyuki Mannen, Hideaki Fujita, 秋山 邦裕, 豊田 晃久, 中嶋 康夫

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 51 )   237 - 240   2014.8

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  • A Power Flow Controller Consisting of Six Cascaded H-Bridge Converters Reviewed

    Tatsuya Hosaka, Hideaki Fujita

    IEEJ Trans. IA   vol. 134 ( no. 6 )   588 - 594   2014.6

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    This paper discusses a new power flow controller consisting of six cascaded converters. Each cascaded converter is composed of four series-connected H-bridge converters, and connected between one phase of the three-phase terminals at the sending end and another phase terminal at the receiving end. Each converter controls its current to be orthogonal to its voltage, and injects a reactive power into the grid. Then the average voltage across the dc capacitor can be kept at a constant level, because no active power is drawn from the grid to the converter. The new power flow controller can adjust not only the reactive power flow but also the active power flow by controlling only the reactive power through the six cascaded converters, because the converter voltage is shifted by ±30° from the phase voltages at the sending and receiving ends. Experimental results obtained from a 400-V, 10-kVA downscaled setup using twenty four H-bridge converters show the capability of controlling both active and reactive power flows as well as regulating the dc capacitor voltage.

    DOI： 10.1541/ieejias.134.588

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  • Temperature Analysis of Parallel-Connected IGBTs under PWM Operating Conditions Using a Physics Model Reviewed

    Takeshi Horiguchi, Kohei Tsukamoto, Shinji Tominaga, Tadashi Nishimura, Hideaki Fujita, Hirofumi Akagi, Shin-ichi Kinouchi, Takeshi Oi, Masato Koyama

    IEEJ Trans. IA   vol. 134 ( no. 5 )   486 - 495   2014.5

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    This paper presents a physics-based IGBT model and a junction temperature analysis of parallel-connected IGBTs under PWM operating conditions using a physics-based IGBT model. The authors developed a physics-based IGBT model in which the excess carrier distribution within a drift region is represented using a one-dimentional ambipolar diffusion equation. The physics-based IGBT model makes it possible to predict losses and switching waveforms for converter applications. IGBTs are connected in parallel for medium- or large-capacity converters. In these applications, a transient current imbalance might occur owing to a difference in the wiring inductance or device characteristics between the IGBTs. An experiment shows that a difference in the wiring inductance between the two IGBTs causes a transient current imbalance, and the result is in excellent agreement with the result of a simulation using the physics-based IGBT model. The two parallel-connected IGBTs in this study correspond to a power module for 3.7kW motor drives, and the junction temperatures of both IGBTs are simulated by electro-thermal simulation under the following two conditions: a difference in the wiring inductance and a difference in the device characteristics. The temperature difference between the two IGBTs is approximately 4-7℃ under the applied conditions: a wiring inductance mismatch (20nH) and a threshold voltage mismatch (0.5V). The validity of the physics-based IGBT model is verified, and the model is found to be very useful when designing power converters.

    DOI： 10.1541/ieejias.134.486

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  • A new power flow controller using six multi- level cascaded converters for distribution systems Reviewed International journal

    Ryoji Tsuruta, Tatsuya Hosaka, Hideaki Fujita

    IEEJ International Power Electronics Conference -ECCE-ASIA   1350 - 1356   2014.5

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    DOI： 10.1109/IPEC.2014.6869761

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  • 70 kHz, 15 kW silicon-carbide MOSFET inverter for industrial induction heating systems Reviewed International journal

    S.Komeda, Y.Tsuboi, H.Fujita

    IEEJ International Power Electronics Conference -ECCE-ASIA   1160 - 1165   2014.5

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    DOI： 10.1109/IPEC.2014.6869733

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  • Performance of dead time compensation methods in three-phase grid-connection converters Reviewed International journal

    Tomoyuki Mannen, Hideaki Fujita

    IEEJ International Power Electronics Conference -ECCE-ASIA   2042 - 2049   2014.5

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    DOI： 10.1109/IPEC.2014.6869868

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  • Analysis and reduction of power losses in PV converters for grid connection to low-voltage three-phase three-wire systems Reviewed International journal

    Ryosuke Amma, Hideaki Fujita

    IEEJ International Power Electronics Conference -ECCE-ASIA   2027 - 2033   2014.5

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    DOI： 10.1109/IPEC.2014.6869866

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  • Voltage ripple elimination in inductor-less AC-to-AC converters for multi-pole permanent magnet synchronous generators Reviewed International journal

    Koutarou Tanaka, Hideaki Fujita

    IEEJ International Power Electronics Conference -ECCE-ASIA   1160 - 1165   2014.5

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    DOI： 10.1109/IPEC.2014.6869710

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  • Analysis and Compensation of Voltage Error Caused by the Dead Time in Three-Phase Voltage-Source Converters Reviewed

    Tomoyuki Mannen, Hideaki Fujita

    IEEJ Trans. IA   vol. 134 ( no. 4 )   412 - 420   2014.4

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    This paper discusses the voltage error caused by the dead time in voltage-source PWM converters. The theoretical analysis in this paper derives the nonlinear voltage error paying attention to the parasitic output capacitance in each switching device. The analytical result reveals that the turn-off current or the switching current ripple strongly affects the voltage error. In addition, it is also clarified that the conventional compensation methods based on linear and three-level approximations are suitable for small and large current ripple conditions, respectively. A simple calculation method of current ripples is also developed to estimate the turn-off currents in three-phase PWM converters. A compensation method based on the analysis is developed and compared with three different conventional methods in experiments using a 200-V, 5-kW three-phase grid-connection converter. The analysis-based method exhibits a good compensation performance, having a lower voltage THD than the conventional methods over a wide operating range.

    DOI： 10.1541/ieejias.134.412

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  • Calculation method of the compensating voltage for the voltage error caused by the dead time

    Tomoyuki Mannen, Hideaki Fujita

    Vol. 4 ( No. 006 )   10 - 11   2014.3

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  • Preventing method of self turn-on in a high frequency inverter using SiC-MOSFETs

    Yoshiki Tsuboi, Shohei Komeda, Hideaki Fujita

    Vol. 4 ( No. 131 )   222 - 223   2014.3

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  • A PV converter for grid connection to a low-voltage three-phase three-wire system using symmetrically connected boost converters

    Ryosuke Amma, Hideaki Fujita

    Vol. 4 ( No. 064 )   105 - 106   2014.3

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  • A three-phase PV converter equipped with a shunt instantaneous reactive power compensator

    Kazuto Takagi, Hideaki Fujita

    Vol. 4 ( No. 151 )   254 - 255   2014.3

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  • Analysis of power losses in semiconductor switching devices

    Yuuki Itogawa, Hideaki Fujita

    Vol. 4 ( No. 134 )   227 - 228   2014.3

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  • A new suppression method of dc-capacitor voltage ripples caused by third harmonic compensation in three-phase active power filters

    Issei Fukasawa, Tomoyuki Mannen, Hideaki Fujita

    Vol. 4 ( No. 153 )   258 - 259   2014.3

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  • An inductor-less three-phase to single-phase boost converter for multi-pole permanent magnet synchronous generators Reviewed International journal

    H.Fujita

    598 - 604   2013.11

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  • A Resonant Gate-Drive Circuit With Optically Isolated Control Signal and Power Supply for Fast-Switching and High-Voltage Power Semiconductor Devices Reviewed International journal

    Hideaki Fujita

    IEEE Transaction on Power Electronics   vol. 28 ( no. 11 )   5423 - 5430   2013.11

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：IEEE  

    DOI： 10.1109/TPEL.2013.2247423

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  • Dynamic control and analysis of Dc-capacitor voltage fluctuations in three-phase active power filters Reviewed International journal

    T.Mannen, H.Fujita, K.Akiyama, Y.Nakashima, T.Toyota

    IEEE TRANSACTIONS ON POWER ELECTRONICS   31 ( 9 )   623 - 628   2013.11

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    DOI： 10.1109/TPEL.2015.2502276

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  • High-Frequency Cycloconverter for a Domestic Induction Heater Reviewed International journal

    Hideaki Fujita, Jouni Tynkkynen

    Japan- Korea Joint Technical Workshop on Semiconductor Power Converter   41 - 46   2013.10

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  • Dead time compensation method based on current ripple estimation Reviewed International journal

    Tomoyuki Mannen, Hideaki Fujita

    IEEE Energy Conversion Congress and Exposition   30 ( 7 )   775 - 782   2013.9

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    DOI： 10.1109/ECCE.2013.6646781

    Web of Science

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  • Dynamic control and analysis of DC-capacitor voltage fluctuations in three-phase active power filters

    Tomoyuki Mannen, Hideaki Fujita, 秋山 邦裕, 豊田 晃久, 中嶋 康夫

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 52 )   239 - 242   2013.8

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  • Transient behavior of IGBT under short circuit conditions by using physics-based model

    Shoji Okamoto, Shinji Tominaga, Tadashi Nishimura, Hideaki Fujita, Hirofumi Akagi, Takeshi Horiguchi, 木ノ内伸一, 大井健史

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 87 )   363 - 366   2013.8

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  • Experimental verification of an inductor-less three-phase to single-phase boost converter

    Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 106 )   423 - 426   2013.8

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  • Analysis and Compensation of the Voltage Error Caused by Dead Time for Voltage-Source PWM converters

    Tomoyuki Mannen, Hideaki Fujita

    ( no. SPC-13-078 )   49 - 54   2013.6

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  • A Phase-Shift-Controlled Switched-Capacitor-Based Resonant Converter -Interleaving Technique for Reducing the Switching Voltage/Current Ripples- Reviewed

    Takuro Arai, Hideaki Fujita

    IEEJ Trans. IA   vol. 133 ( no. 4 )   395 - 403   2013.4

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  • A power-flow controller using cascaded H-bridge cascaded converters

    Tatsuya Hosaka, Hideaki Fujita

    Vol. 4 ( No. 049 )   86 - 87   2013.3

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  • Output inductor-less cycloconverter for multipole permanent-magnet synchronous generator

    Koutarou Tanaka, Hideaki Fujita

    Vol. 4 ( No. 020 )   33 - 34   2013.3

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  • Performance comparison of dead time compensation methods for grid-connection inverters

    Tomoyuki Mannen, Hideaki Fujita

    Vol. 4 ( No. 022 )   36 - 37   2013.3

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  • A Power-Flow Controller Consisting of Six Cascaded H-Bridge Converters

    Tatsuya Hosaka, Hideaki Fujita

    ( no. SPC-13-009 )   53 - 58   2013.1

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  • An Inductorless Three-Phase to Single-Phase Boost Converter

    Ryo Ishibashi, Hideaki Fujita

    ( no. SPC-13-006 )   33 - 38   2013.1

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  • A Three-Phase PV Inverter Equipped With an Instantaneous Reactive Power Compensator

    Hideaki Ishihara, Hideaki Fujita

    ( no. SPC-13-029 )   81 - 86   2013.1

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  • Dynamic analysis and control for resonant currents in a zone-control induction heating system Reviewed

    Pham, H.N., Hideaki Fujita, Ozaki, K., Uchida, N.

    IEEE Transactions on Power Electronics   28 ( 3 )   1297 - 1307   2013

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    DOI： 10.1109/TPEL.2012.2210286

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  • A New Power Flow Controller Based on Six Modular Multilevel Cascade Converters Reviewed International journal

    Hideaki Fujita

    Taiwan-Japan Symposium on Power Conversion   2012.11

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  • Emerging Technologies for Multilevel Converters in Japan Reviewed International journal

    Hideaki Fujita

    IEEJ Journal of Industry Applications   vol. 1 ( no. 2 )   95 - 101   2012.9

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    DOI： 10.1541/ieejjia.1.95

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  • Heat distribution control using current amplitude and phase angle in zone-control induction heating systems Reviewed International journal

    Pham, Fujita, Ozaki, Uchida

    IEEE Energy Conversion Congress and Exposition   2474 - 2481   2012.9

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    DOI： 10.1109/ECCE.2012.6342403

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  • High-Frequency Cycloconverter for Domestic Induction Heating Appliances

    Jouni Tynkkynen, Ha Pham Ngoc, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 71 )   321 - 324   2012.8

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  • 物​理​モ​デ​ル​に​基​づ​く​I​G​B​T​並​列​駆​動​時​に​お​け​る​接​合​温​度​解​析

    塚本剛平, 冨永真志, 西村 正, 藤田英明, 赤木泰文

    電気学会 産業応用部門大会   Vol. 1 ( no. 34 )   2012.8

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  • Estimating Method of Heat Distribution Using 3-D Resistance Matrix for Zone-Control Induction Heating Systems Reviewed International journal

    Ngoc Ha Pham, Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    IEEE Transaction on Power Electronics   vol. 27 ( no. 7 )   3374 - 3382   2012.7

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    DOI： 10.1109/TPEL.2011.2179984

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  • A New Coil Current Control Method for Zone-Control Induction Heating Systems Based on a Rectangular Coordinate Transformation Reviewed

    Yuuki Ishii, Hideaki Fujita

    IEEJ Trans. IA   vol. 132 ( no. 6 )   659 - 665   2012.6

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  • Study of a DC voltage equalizing circuit and a zero-sequence voltage control method for a diode-clamped linear amplifier Reviewed

    Naoya Yamashita, Hideaki Fujita

    ELECTRICAL ENGINEERING IN JAPAN   179 ( 2 )   55 - 63   2012.4

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    DOI： 10.1002/eej.21131

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  • 位​相​シ​フ​ト​制​御​を​適​用​し​た​共​振​形​ス​イ​ッ​チ​ト​キ​ャ​パ​シ​タ​コ​ン​バ​ー​タ​―​ス​イ​ッ​チ​ン​グ​損​失​を​最​小​化​す​る​動​作​周​波​数​制​御​法​―

    新井卓郎, 藤田英明

    平成24年 電気学会全国大会 講演論文集   Vol. 4   12 - 13   2012.3

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  • Solar Power Conditioners Using Bidirectional Chopper Circuits Connected in Series Reviewed

    Hideaki Fujita, Masao Mabuchi, Yasuhiro Tsubota, Takao Mizogami

    IEEJ Trans. IA   vol. 132 ( no. 1 )   50 - 57   2012.1

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  • Phase-Shift-Controlled Switched-Capacitor-Based Resonant Converter -Principle of Power Transfer and Analysis of Theoretical Power Losses- Reviewed

    Takuro Arai, Ben York, Hideaki Fujita

    IEEJ Trans. IA   vol. 131 ( no. 11 )   1338 - 1345   2011.11

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  • Phase Angle Control of High-Frequency Resonant Currents in a Multiple Inverter System for Zone-Control Induction Heating Reviewed International journal

    Ngoc Ha Pham, Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    IEEE Transaction on Power Electronics   vol. 26 ( no. 11 )   3357 - 3366   2011.11

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    DOI： 10.1109/TPEL.2011.2146278

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  • Emerging Technologies for Multilevel Converters in Japan Reviewed International journal

    Hideaki Fujita

    Japan- Korea Joint Technical Workshop on Semiconductor Power Converter   11 - 16   2011.10

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  • Technology Trends of Components for Power Electronics System Integration

    Tsuneo Ogura, Shinishiro Nagai, Hideaki Fujita, Makoto Saito, Tomoyuki Nakazawa, Yasushi Suzuki, Koichi Ueki, Toshihisa Shimizu

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 1-S13-3 )   29 - 34   2011.9

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  • A Phase-Shift-Controlled Switched-Capacitor-Based Resonant Converter -Interleaving Operation for Reducing Output Current Ripples and Power Losses-

    Takuro Arai, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 1-20 )   163 - 166   2011.9

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  • Investigation of noise and switching-energy loss by using a precise MOSFET model

    Yasuaki Iwata, Shinji Tominaga, Hideaki Fujita, Hirofumi Akagi, 堀口剛司, 木ノ内伸一, 大井健史, hiroaki urushibata

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 1-135 )   615 - 618   2011.9

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  • A Unified Power-Flow Controller Consisting of Six Cascaded H-Bridge Converters

    Tatsuya Hosaka, Kazuki Akiba, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( no. 1-35 )   223 - 236   2011.9

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  • Core-Loss Analysis in AC Inductors for a Single-Phase Pulse-Width Modulated Solar Power Conditioner Reviewed International journal

    Hideaki Fujita

    IEEE Energy Conversion Congress and Exposition   2050 - 2057   2011.9

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    DOI： 10.1109/ECCE.2011.6064039

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  • Dynamic Analysis and Control of a Zone-Control Induction Heating System Reviewed International journal

    Ha Pham Ngoc, Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    IEEE Energy Conversion Congress and Exposition   4093 - 4100   2011.9

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    DOI： 10.1109/ECCE.2011.6064326

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  • Modeling of IGBTs with Focus on Voltage Dependency of Terminal Capacitances Reviewed International journal

    Shinji Tominaga, Hiroaki Urushibata, Hideaki Fujita, Hirofumi Akagi, Takeshi Horiguchi, Shin-ichi Kinouchi, Takeshi Oi

    Proceedings of European Conference on Power Electronics and Applications   1 - 9   2011.8

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  • A New Zone-Control Induction Heating System Using Multiple Inverter Units Applicable Under Mutual Magnetic Coupling Conditions Reviewed International journal

    Hideaki Fujita, Naoki Uchida, kazuhiro ozaki

    IEEE Transaction on Power Electronics   vol. 26 ( no. 7 )   2009 - 2017   2011.7

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    DOI： 10.1109/TPEL.2010.2101084

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  • A Phase-Shift-Controlled Switched-Capacitor-Based Resonant Converter : Analysis of the Output Current and Voltage Ripples

    Takuro Arai, Hideaki Fujita

    ( no. SPC-11-107 )   7 - 12   2011.6

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  • Regenerative Operation of a Diode-Clamped Linear Amplifier and Its Application as an Electronic Load Reviewed

    Naoya Yamashita, Hideaki Fujita

    IEEJ Trans. IA   vol. 131 ( no. 4 )   633 - 639   2011.4

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    DOI： 10.1541/ieejias.131.633

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  • Performance of a High-Efficiency Switched-Capacitor-Based Resonant Converter With Phase-Shift Control Reviewed International journal

    Kenichiro Sano, Hideaki Fujita

    IEEE Transaction on Power Electronics   vol. 26 ( no. 2 )   344 - 354   2011.2

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    DOI： 10.1109/TPEL.2010.2062537

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  • A Coil Current Control Method for Zone-Control Induction Heating Systems Based on a Rectangular Coordinate Transformation

    Yuuki Ishii, Hideaki Fujita, Naoki Uchida, Kazuhiro Ozaki

    ( no. SPC-11-052 )   157 - 162   2011.1

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  • A multi-sampling and multi-update Control Method for Active Power Filters

    Ryoji Sakai, Hideaki Fujita

    ( no. SPC-11-038 )   77 - 82   2011.1

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  • A Dynamic Voltage Restorer Equipped With a High-Frequency Isolated DC–DC Converter Reviewed International journal

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    IEEE Transaction on Industry Applications   vol. 47 ( no. 1 )   169 - 175   2011.1

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    DOI： 10.1109/TIA.2010.2091374

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  • Modeling and simulation of 500 kV transmission network for numerical fault calculation, detection, using PSCAD/EMTDC Reviewed International journal

    Kajoijilertsakul, P., Asawasripongtorn, S., Sanposh, P., Suwatthikul, J., Hideaki Fujita

    Asia-Pacific Power and Energy Engineering Conference, APPEEC   2011

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    DOI： 10.1109/APPEEC.2011.5749105

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  • Wavelet based fault detection, classification and location in existing 500 kV transmission line Reviewed International journal

    Kajoijilertsakul, P., Asawasripongtorn, S., Sanposh, P., Suwatthikul, J., Hideaki Fujita

    ECTI-CON 2011 - 8th Electrical Engineering/ Electronics, Computer, Telecommunications and Information Technology (ECTI) Association of Thailand - Conference 2011   873 - 876   2011

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    DOI： 10.1109/ECTICON.2011.5947979

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  • A Phase-Shift-Controlled Switched-Capacitor-Based Resonant Converter : Comparison of the Theoretical Power Loss

    Takuro Arai, Hideaki Fujita, Ben York

    ( no. SPC-10-126 )   35 - 40   2010.11

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  • Inductor-Loss Analysis in a Three-Phase AC-Interfaced Converter Using a Single-Phase PWM Control Method

    Gosuke Kikuchi, Hideaki Fujita

    ( no. SPC-10-127 )   41 - 46   2010.11

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  • Switching Loss Analysis of a Three-Phase Solar Power Conditioner Using a Single-Phase PWM Control Method Reviewed International journal

    Hideaki Fujita

    IEEE Energy Conversion Congress and Exposition   618 - 623   2010.9

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    DOI： 10.1109/ECCE.2010.5617954

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  • A Phase-Shift-Controlled Resonant Switched-Capacitor Converter -Loss Analysis-

    Takuro Arai, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1   357 - 360   2010.8

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  • Analysis of Reverse-Recovery Characteristics of Parallel-Connected pin Diodes Using a Physics-Based Device Model

    Takayuki Sugimoto, Shinji Tominaga, Hiroaki Urushibata, Hideaki Fujita, Hirofumi Akagi, Shinichi Kinouchi, Takeshi Oi

    IEEJ Japan Industry Application Society Conference   Vol. 1   375 - 376   2010.8

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  • Analysis and Control of a DC-Capacitor Voltage Regulation in an MMCC-DSCC

    Hideaki Fujita, Ryo Maeda, Makoto Hagiwara, Hirofumi Akagi

    IEEJ Japan Industry Application Society Conference   Vol. 1   259 - 264   2010.8

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  • A High-Efficiency Solar Power Conditioner Using a Zigzag-Connected Chopper Converter Reviewed International journal

    Hideaki Fujita

    Proc. of IPEC-Sapporo 2010 -ECC Asia-   1681 - 1687   2010.6

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    DOI： 10.1109/IPEC.2010.5542134

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  • Reducing output current ripple of resonant switched-capacitor step-up converter with interleaving technique Reviewed International journal

    Kenichiro Sano, Takuro Arai, Hideaki Fujita

    International Power Electronics Conference - ECCE Asia -, IPEC 2010   1635 - 1641   2010.6

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    Language：English   Publishing type：Research paper (international conference proceedings)   Publisher：IEEJ  

    DOI： 10.1109/IPEC.2010.5544632

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  • A Resonant Gate-Drive Circuit with Optically-Isolated Control Signal and Power Supply for Fast-Switching and High-Voltage Power Semiconductor Devices Reviewed International journal

    Hideaki Fujita, Masanori Ishigaki

    Proc. of IPEC-Sapporo 2010 -ECC Asia-   1895 - 1901   2010.6

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    DOI： 10.1109/IPEC.2010.5542024

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  • A Zone-Control Induction Heating (ZCIH) System for Semiconductor Processing Reviewed

    Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    ELECTRICAL ENGINEERING IN JAPAN   171 ( 1 )   37 - 45   2010.4

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    DOI： 10.1002/eej.20908

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  • A new curent control method for zone-control induction heating systems

    Yuuki Ishii, Pham Ngoc Ha, Hideaki Fujita, Naoki Uchida, Kazuhiro Ozaki

    Vol. 4 ( No. 040 )   66 - 67   2010.3

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  • A resonant switched-capacitor converter applying a phase-shift control method -Reduction of output current ripple in interleaving operation-

    Takuro Arai, Kenichiro Sano, Hideaki Fujita

    Vol. 4 ( No. 015 )   24 - 25   2010.3

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  • Resonant phenomenon in a single-phase PWM control method

    Gosuke Kikuchi, Hideaki Fujita

    Vol. 4 ( No. 036 )   59 - 60   2010.3

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  • Solar power conditioner using series-connected bi-directional choppers

    Kohei Uemura, Hideaki Fujita

    Vol. 4 ( No. 065 )   110 - 111   2010.3

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  • Switching oss analysis in a single-phase PWM control method

    Hideaki Fujita

    Vol. 4 ( No. 007 )   9 - 10   2010.3

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  • 可逆チョッパ回路を直列接続したソーラーパワーコンディショナ

    上村昂平, 藤田英明, 馬渕雅夫, 坪田康弘, 溝上孝生

    電気学会 半導体電力変換研究会資料   ( No. SPC-10-030 )   47 - 52   2010.1

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  • Parameter identification of a linear permanent magnet motor using particle swarm optimization Reviewed International journal

    Therdbankerd, T., Sanposh, P., Chayopitak, N., Hideaki Fujita

    ECTI-CON 2010 - The 2010 ECTI International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology   173 - 177   2010

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  • A Reduction Method of a DC Capacitor in a Single-Phase Active Power Filter Reviewed International journal

    Hideaki Fujita

    International Conference on Power Electronics and Drive Systems   ( No. 239 )   2009.11

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    DOI： 10.1109/PEDS.2009.5385655

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  • A resonant switched-capacitor converter for voltage balancing of series-connected capacitors Reviewed International journal

    Kenichiro Sano, Hideaki Fujita

    International Conference on Power Electronics and Drive Systems   ( No. 196 )   211 - 216   2009.11

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    DOI： 10.1109/PEDS.2009.5385680

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  • A Three-Phase Voltage-Source Solar Power Conditioner Using a Single-Phase PWM Control Method Reviewed International journal

    Hideaki Fujita

    IEEE Energy Conversion Congress and Exposition   3748 - 3754   2009.9

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    DOI： 10.1109/ECCE.2009.5316305

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  • Improving Dynamic Performance and Efficiency of a Resonant Switched-Capacitor Converter Based on Phase-Shift Control Reviewed International journal

    Kenichiro Sano, Hideaki Fujita

    IEEE Energy Conversion Congress and Exposition   3509 - 3515   2009.9

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    DOI： 10.1109/ECCE.2009.5316453

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  • A Dynamic Voltage Restorer Equipped With a High-Frequency Isolated DC-DC Converter Reviewed International journal

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    IEEE Energy Conversion Congress and Exposition   1459 - 1465   2009.9

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    DOI： 10.1109/ECCE.2009.5316471

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  • Recent Technology of New Power Converter Circuit for Utility Power Line Interface toward Integration

    Hirohito Funato, Hideaki Fujita, Yukihiko Sato

    IEEJ Japan Industry Application Society Conference   Vol. 1   147 - 150   2009.8

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  • Voltage Regulating Performance and Efficiency of a Resonant Switched-Capacitor Converter Applying a Phase-Shift Control

    Kenichiro Sano, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1   245 - 250   2009.8

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  • Effect of Carrier Lifetime Zoning on pin Diode Model

    Takashi Toyama, Shinji Tominaga, hiroaki urushibata, Hideaki Fujita, Hirofumi Akagi, 木ノ内伸一, 大井健史

    IEEJ Japan Industry Application Society Conference   Vol. 1   415 - 418   2009.8

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  • A Three-phase STATCOM Using a Single-Phase PWM Control Method

    Hideaki Fujita, Gousuke Kikuchi

    IEEJ Japan Industry Application Society Conference   Vol. 1   547 - 550   2009.8

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  • Analysis and Control of the Heat Distribution in a Zone-Control Induction Heating System

    Ngoc Ha Pham, Hideaki Fujita, 内田直樹, 尾崎一博

    IEEJ Japan Industry Application Society Conference   Vol. 1   473 - 478   2009.8

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    DOI： 10.1109/IPEC.2010.5543680

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  • A New Control Method of a Resonant Switched-Capacitor Converter and the Application for Balancing of the Split DC Voltages in a Multilevel Inverter Reviewed

    Kenichiro Sano, Hideaki Fujita

    ELECTRICAL ENGINEERING IN JAPAN   168 ( 2 )   69 - 79   2009.7

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/eej.20719

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  • A 6.6-kV Transformerless STATCOM Based on a Five-Level Diode-Clamped Converter. Experiments Using a Three-Phase Laboratory Model Rated at 200 V and 10 kVA Reviewed

    Yosuke Kondo, Hideaki Fujita, Hirofumi Akagi

    ELECTRICAL ENGINEERING IN JAPAN   168 ( 2 )   60 - 68   2009.7

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    DOI： 10.1002/eej.20733

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  • 交流インダクタとEMIフィルタを用いない三相交流電源インターフェイス回路

    藤田英明

    電気学会 半導体電力変換研究会資料   ( No. SPC-09-90 )   7 - 12   2009.6

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  • Switching loss reduction using a single-phase PWM control method

    Hideaki Fujita, Ryo Suzuki

    Vol. 4 ( No. 29 )   51 - 52   2009.3

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  • Voltage regulating performance of a resonant seitched-cpacitor converter applying a phase-shift control

    Kenichiro Sano, Hideaki Fujita

    Vol. 4 ( No. 38 )   67 - 68   2009.3

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  • A dynamic voltage restorer characterized by the use of a high-frequency isolated dc/dc converter

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    Vol. 4 ( No. 160 )   267 - 268   2009.3

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  • A Filter-Less EMI-Free Power Converter Using a Diode-Clamped Linear Amplifier Reviewed International journal

    N. Yamashita, H. Fujita

    IEEE APEC 2009   vol. 1   1 - 7   2009.2

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  • 一相PWM制御法を用いた三相ソーラーパワーコンディショナ

    鈴木 亮, 藤田英明

    電気学会 半導体電力変換研究会資料   ( No. SPC-09-15 )   87 - 92   2009.1

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  • ダイオードクランプ形線形増幅回路の回生特性

    ゴ ハー ヨン, 山下尚也, 藤田英明

    電気学会 半導体電力変換研究会資料   ( No. SPC-09-41 )   121 - 127   2009.1

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  • Experimental verification of a dynamic voltage restorer capable of significantly reducing energy-storage element requirements Reviewed

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    ELECTRICAL ENGINEERING IN JAPAN   165 ( 3 )   73 - 82   2008.11

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    DOI： 10.1002/eej.20460

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  • Current Rating Reduction of the RSCC Voltage-Balancing Circuit for a Diode-Clamped Five-Level Inverter

    Kenichiro Sano, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( No. 141 )   549 - 552   2008.8

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  • ゾーンコントロール誘導加熱システムの発熱分布

    ファムゴク ハー, 藤田英明, 内田直喜, 尾崎一博

    平成20年 電気学会全国大会 講演論文集   Vol. 4 ( No. 52 )   89 - 90   2008.3

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  • 交流フィルタレス三相系統連系用電力変換回路

    覺野重範, 藤田英明

    平成20年 電気学会全国大会 講演論文集   Vol. 4 ( No. 49 )   83 - 84   2008.3

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  • ゾーンコントロール誘導加熱装置の電流位相制御と過渡特性

    ファム ゴク ハー, 藤田英明, 尾崎一博, 内田直喜

    電気学会 半導体電力変換研究会資料   ( No. SPC-08-24 )   19 - 24   2008.1

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  • Control and Performance of a Utility-Interface Converter without any AC Filter

    Shigenori Kakuno, Hideaki Fujita

    ( No. SPC-07-114 )   25 - 30   2007.11

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  • A 21-level (line-to-line) BTB system based on series connection of 16 converter cells. Experimental verification by a 200-V, 20-kW laboratory system Reviewed

    Makoto Hagiwara, Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    ELECTRICAL ENGINEERING IN JAPAN   160 ( 1 )   61 - 70   2007.4

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    DOI： 10.1002/eej.20324

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  • Zone Controlled Induction Heating (ZCIH) - A New Concept in Induction Heating Reviewed International journal

    Hideaki Fujita, Naoki Uchida, Kazuhiro Ozaki

    PCC-Nagoya 2007   1498 - 1504   2007.4

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    DOI： 10.1109/PCCON.2007.373162

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  • A New Control Method of a Resonant Switched-Capacitor Converter and its Application to Balancing of the Split DC Voltages in a Multilevel Inverter Reviewed International journal

    Kenichiro Sano, Hideaki Fujita

    PCC-Nagoya 2007   122 - 129   2007.4

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    DOI： 10.1109/PCCON.2007.372957

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  • A Practical Approach to Eliminating DC Magnetic Flux from the Series Transformer of a Dynamic Voltage Restorer Reviewed International journal

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    PCC-Nagoya 2007   1673 - 1679   2007.4

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    DOI： 10.1109/PCCON.2007.373187

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  • A Fast Current Controller Based on Oversampling and its Application to a Single-Phase Active Filter

    Kenji Hirasaki, Hideaki Fujita

    ( No. SPC-07-27 )   37 - 42   2007.1

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  • A Zero-Sequence Voltage Control for a Diode-Clamped Linear Amplifier

    伊藤 浩介, Naoya Yamashita, Hideaki Fujita

    ( No. SPC-07-2 )   7 - 12   2007.1

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  • Phase Angle Control of Resonant Currents in a Zone Controlled Induction Heating System

    高橋 裕司, Hideaki Fujita, 内田 直喜, 尾崎 一博

    ( No. SPC-07-24 )   19 - 24   2007.1

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  • A Resonant Gate-drive Circuit for Fast and High Voltage Semiconductor Devices

    Masanori Ishigaki, Hideaki Fujita

    ( No. SPC-07-19 )   49 - 54   2007.1

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  • A Reduction Method of Transient DC-Voltage Fluctuations for a Single-Phase Active Filter

    Kenji Hirasaki, Hideaki Fujita

    ( No. SPC-06-109 )   61 - 66   2006.11

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  • Dynamic Behavior of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition: Experimental Verification by a 200-V, 20-kW Laboratory System Reviewed International journal

    M. Hagiwara, K. Wada, H. Fujita, H. Akagi

    IEEE IAS Annual Meeting   Vol. 2   1001 - 1008   2006.10

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    DOI： 10.1109/IAS.2006.256647

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  • A New Control Method of a Resonant Switched-Capacitor Converter and the Application for Balancing of the Split DC Voltages in a Multilevel Inverter

    Kenichiro Sano, Hideaki Fujita

    IEEJ Transactions on Industry Applications   127 ( No. SPC-06-90 )   19 - 25   2006.6

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    DOI： 10.1541/ieejias.127.330

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  • A Resonant Gate-drive Circuit for High Frequency and High Efficiency Converter

    Masanori Ishigaki, Hideaki Fujita

    ( No. SPC-06-93 )   39 - 44   2006.6

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  • Design and experimentation of a dynamic voltage restorer capable of significantly reducing an energy-storage element Reviewed International journal

    T. Jimichi, H. Fujita, H. Akagi

    IEEE IAS Annual Meeting   Vol. 2   896 - 903   2005.10

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    DOI： 10.1109/IAS.2005.1518446

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  • A 6.6-kV transformerless STATCOM based on a five-level diode-clamped PWM converter: system design and experimentation of a 200-V, 10-kVA laboratory model Reviewed International journal

    H. Akagi, H. Fujita, S. Yonetani, Y. Kondo

    IEEE IAS Annual Meeting   Vol. 1   557 - 564   2005.10

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    DOI： 10.1109/IAS.2005.1518362

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  • Voltage regulation performance of a shunt active filter intended for installation on a power distribution system Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi

    IEEE PELS PESC   2578 - 2584   2005.6

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    DOI： 10.1109/PESC.2005.1581996

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  • Dynamic behaviors of a 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells under a single-line-to-ground fault condition Reviewed International journal

    Makoto Hagiwara, Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IPEC 2005   2192 - 2198   2005.4

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  • A 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells for power flow control: experimental verifications by a 200-V, 10-kW laboratory system Reviewed International journal

    M. Hagiwara, H. Fujita, H. Akagi

    IEEE IAS Annual Meeting   Vol. 3   1432 - 1438   2004.10

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    DOI： 10.1109/IAS.2004.1348659

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  • Occurrence and suppression of DC-flux deviations in a doubly-fed flywheel generator system Reviewed International journal

    H. Fujita, H. Akagi, M. Tan, S. Ogasawara

    IEEE IAS Annual Meeting   Vol. 3   1766 - 1771   2003.10

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  • A self-commutated back-to-back system and its performance under a single line-to-ground fault condition Reviewed

    Makoto Hagiwara, Hirofumi Akagi, Hideaki Fujita

    Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)   143 ( 3 )   68 - 78   2003.5

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    DOI： 10.1002/eej.10124

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  • Performance of automatic gain adjustment in a shunt active filter intended for installation on power distribution systems Reviewed

    P Jintakosonwit, H Akagi, H Fujita, S Ogasawara

    ELECTRICAL ENGINEERING IN JAPAN   142 ( 4 )   56 - 65   2003.3

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    DOI： 10.1002/eej.10094

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  • Implementation and performance of cooperative control of shunt active filters for harmonic damping throughout a power distribution system Reviewed International journal

    P. Jintakosonwit, H. Fujita, H. Akagi, S. Ogasawara

    IEEE IAS Annual Meeting   Vol. 1   51 - 58   2002.10

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  • Dynamic performance of a unified power flow controller for stabilizing AC transmission systems Reviewed International journal

    H. Fujita, H. Akagi, Y. Watanabe

    IEEE PELS PESC   Vol. 1   81 - 87   2002.6

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  • Performance of a self-commutated BTB system under a single-line-to-ground fault condition Reviewed International journal

    M. Hagiwara, H. Akagi, H. Fujita

    Power Conversion Conference, 2002   Vol. 3   1124 - 1131   2002.4

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    DOI： 10.1109/PCC.2002.998130

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  • Analysis of harmonic propagation in a power distribution system: An application of a distributed constant-circuit model Reviewed

    K Wada, H Fujita, H Akagi

    ELECTRICAL ENGINEERING IN JAPAN   139 ( 1 )   73 - 81   2002.4

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    DOI： 10.1002/eej.1148

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  • Experimental verification of dispersed installation of shunt active filters based on voltage detection for harmonic damping throughout power distribution systems Reviewed

    K Wada, S Inabe, H Fujita, H Akagi, N Shibamaru

    ELECTRICAL ENGINEERING IN JAPAN   138 ( 1 )   14 - 23   2002.1

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  • Considerations of a shunt active filter based on voltage detection for installation on a long distribution feeder Reviewed

    K Wada, H Fujita, H Akagi

    CONFERENCE RECORD OF THE 2001 IEEE INDUSTRY APPLICATIONS CONFERENCE, VOLS 1-4   157 - 163   2001

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  • Performance of automatic gain adjustment in shunt active filters for harmonic damping throughout power distribution systems Reviewed

    P Jintakosonwit, H Akagi, H Fujita

    PESC 2001: 32ND ANNUAL POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-4, CONFERENCE PROCEEDINGS   1389 - 1395   2001

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  • 低温プラズマ発生装置用薄型MOSFETモジュールを用いた2MHz6kVA電圧形インバータ

    藤田英明, 赤木泰文, 篠原信一

    電気学会 半導体電力変換研究会資料   ( No. SPC-00-92 )   2000.11

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  • Experimental verification of the effect of a voltage-detection-based shunt active filter for harmonic damping throughout a power distribution line Reviewed

    K Wada, H Fujita, H Akagi, N Shibamaru

    ELECTRICAL ENGINEERING IN JAPAN   133 ( 2 )   1 - 10   2000.11

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  • Control and performance of a zero-current-switched, three-phase PWM inverter equipped with resonant circuits on the ac side Reviewed

    H Fujita, S Ogasawara, H Akagi

    ELECTRICAL ENGINEERING IN JAPAN   131 ( 4 )   85 - 95   2000.6

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  • LC回路の共振と過渡現象を活用した半導体電力変換システムの高効率・高性能化に関する研究

    藤田英明

    2000.2

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  • Stability Improvement of a Series Active Filter Integrated with a Double-Series Diode Rectifier

    Sunt, Hideaki Fujita, Hirofumi Akagi

    電気学会 半導体電力変換研究会資料   ( No. SPC-00-51 )   81 - 86   2000.1

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  • アクティブフィルタを用いた電力系統高調波発生源探査法

    ジンタコソンビット ピチャイ, 藤田 英明, 赤木 泰文

    電気学会 半導体電力変換研究会資料   ( No. SPC-00-52 )   2000.1

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  • Control schemes and transient characteristics of a high-speed phase shifter for power flow control in power transmission systems Reviewed

    Y Watanabe, H Fujita, H Akagi

    ELECTRICAL ENGINEERING IN JAPAN   128 ( 2 )   74 - 82   1999.7

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  • 配電系統用アクティブフィルタの高調波拡大現象抑制効果の実験的検証 Reviewed

    和田圭二, 藤田英明, 赤木泰文

    電気学会論文誌B   119 ( 2 )   638 - 645   1999.2

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  • Control and performance of a pulse-density-modulated series-resonant inverter for corona discharge processes Reviewed

    H Fujita, H Akagi

    CONFERENCE RECORD OF THE 1998 IEEE INDUSTRY APPLICATIONS CONFERENCE, VOLS 1-3   1320 - 1325   1998

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  • A hybrid active filter for damping of harmonic resonance in industrial power systems Reviewed

    Hideaki Fujita, Takahiro Yamasaki, Hirofumi Akagi

    PESC Record - IEEE Annual Power Electronics Specialists Conference   1   209 - 216   1998

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    DOI： 10.1109/PESC.1998.701901

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  • A shunt active filter based on voltage detection for harmonic termination of a radial power distribution line Reviewed

    H Akagi, H Fujita, K Wada

    CONFERENCE RECORD OF THE 1998 IEEE INDUSTRY APPLICATIONS CONFERENCE, VOLS 1-3   1393 - 1399   1998

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  • Control and characteristics of a static var generator under single-line-to-ground faults Reviewed

    S Tominaga, H Fujita, H Akagi

    IECON '97 - PROCEEDINGS OF THE 23RD INTERNATIONAL CONFERENCE ON INDUSTRIAL ELECTRONICS, CONTROL, AND INSTRUMENTATION, VOLS. 1-4   822 - 826   1997

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  • A 2 MHz, 2 kW voltage-source inverter for low-temperature plasma generators: Implementation of fast switching with a third-order resonant circuit Reviewed

    H Fujita, H Akagi

    IAS '97 - CONFERENCE RECORD OF THE 1997 IEEE INDUSTRY APPLICATIONS CONFERENCE / THIRTY-SECOND IAS ANNUAL MEETING, VOLS 1-3   1647 - 1652   1997

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  • An approach to a broad range of power control in voltage-source series-resonant inverters for corona discharge treatment - Pulse-density-modulation Reviewed

    H Fujita, S Ogasawara, H Akagi

    PESC'97: 28TH ANNUAL IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE - RECORD, VOLS I AND II   1000 - 1006   1997

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  • Transient analysis of an advanced static Var compensator using quad-series voltage-source PAM inverters Reviewed

    S Tominaga, H Fujita, H Akagi

    ELECTRICAL ENGINEERING IN JAPAN   117 ( 2 )   93 - 106   1996.8

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  • An approach to harmonic-free AC/DC power conversion for large industrial loads: The integration of a series active filter with a double-series diode rectifier Reviewed

    H Fujita, H Akagi

    IAS '96 - CONFERENCE RECORD OF THE 1996 IEEE INDUSTRY APPLICATIONS CONFERENCE, THIRTY-FIRST IAS ANNUAL MEETING, VOLS 1-4   1040 - 1047   1996

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  • Control and performance of a zero-current-switched three-phase inverter equipped with resonant circuits on the AC-side Reviewed

    H Fujita, S Ogasawara, H Akagi

    IAS '96 - CONFERENCE RECORD OF THE 1996 IEEE INDUSTRY APPLICATIONS CONFERENCE, THIRTY-FIRST IAS ANNUAL MEETING, VOLS 1-4   1235 - 1241   1996

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  • The unified power quality conditioner: The integration of series active filters and shunt active filters Reviewed

    H Fujita, H Akagi

    PESC 96 RECORD - 27TH ANNUAL IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS I AND II   494 - 501   1996

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  • Application of zero-voltage-switching to a DC voltage-controlled static var compensator using quad-series voltage-source inverters Reviewed

    S Tominaga, H Fujita, H Akagi

    PESC 96 RECORD - 27TH ANNUAL IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS I AND II   482 - 488   1996

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  • A ZERO-CURRENT-SWITCHING BASED 3-PHASE PULSE-WIDTH MODULATION INVERTER Reviewed

    H FUJITA, H AKAGI

    ELECTRICAL ENGINEERING IN JAPAN   115 ( 4 )   101 - 109   1995.6

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  • Analysis and design of an advanced static var compensator using quad-series voltage-source inverters Reviewed

    H Fujita, S Tominaga, H Akagi

    IAS '95 - CONFERENCE RECORD OF THE 1995 IEEE INDUSTRY APPLICATIONS CONFERENCE/THIRTIETH IAS ANNUAL MEETING, VOLS 1-3   2565 - 2572   1995

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  • A Zero-Current-Switching Based Three-Phase PWM Inverter Having Resonant Circuits on AC Side Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi

    IAS 93, PTS 1-3   821—826 - 826   1993.10

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  • Combined system of a series active filter and a shunt passive filter—an optimum design of the shunt passive filter Reviewed

    Hideaki Fujita, Hirofumi Akagi

    Electrical Engineering in Japan   113 ( 2 )   91 - 101   1993

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    DOI： 10.1002/eej.4391130208

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  • Design Strategy for the Combined System of Shunt Passive and Series Active Filters Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi

    898—903   1991.10

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  • A Practical Approach to Harmonic Compensation in Power Systems -Series Connection of Passive and Active Filters- Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi

    CONFERENCE RECORD OF THE 1990 IEEE INDUSTRY APPLICATIONS SOCIETY ANNUAL MEETINGS, PARTS 1 AND 2   1107—1112 - 1112   1990.10

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  • LC回路を直列接続したアクティブフィルタに関する研究 Reviewed

    藤田英明

    1990

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MISC

  • Development of A SiC-MOSFET Model for Designing Power Converters

    Dai Ninomiya, Tadashi Nishimura, Hideaki Fujita, Hirofumi Akagi

    2015 ( no. SPC-15-007 )   37 - 42   2015.1

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  • 学界情報 国際会議レポート：International Power Electronics Conference IPEC-Hiroshima ECCE -Asia- 2014, May 18-21, 2014, International Conference Center, Hiroshima, Japan

    藤田英明

    電気学会論文誌Ｄ（産業応用部門誌）   134 ( 8 )   NL8_8 - NL8_8   2014

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    Language：Japanese   Publishing type：Rapid communication, short report, research note, etc. (bulletin of university, research institution)   Publisher：The Institute of Electrical Engineers of Japan  

    DOI： 10.1541/ieejias.134.NL8_8

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  • Estimation of Temperature of IGBTs Connected in Parallel by Using Physics-Based Model

    Kohei Tsukamoto, Shinji Tominaga, Masaki Nishimura, Hideaki Fujita, Hirofumi Akagi, Takeshi Horiguchi, 木ノ内伸一, 大井健史

    2013 ( no. SPC-13-024 )   49 - 54   2013.1

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  • 平成25年度産業応用部門事業計画の要点

    藤田英明

    電気学会論文誌Ｄ（産業応用部門誌）   133 ( 6 )   NL6_1 - NL6_1   2013

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    DOI： 10.1541/ieejias.133.NL6_1

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  • Power Flow Analysis and DC-Capacitor Voltage Regulation for the MMCC-DSCC Reviewed

    Hideaki Fujita, Makoto Hagiwara, Hirofumi Akagi

    IEEJ Trans. IA   vol. 132 ( no. 6 )   659 - 665   2012.6

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    This paper discusses the power flow analysis and dc-capacitor voltage regulation for the modular multilevel cascaded converter (MMCC) based on double-star chopper cells (DSCC). This analysis reveals the relationship between the circulating current through the dc link and the mean power flowing out of or into each chopper cell. The dc component on the circulating current supplies a half of the active output power to the upper and lower strings of chopper cells, whereas the fundamental-frequency component transfers an amount of power between the upper and lower strings. Thus, the MMCC-DSCC can balance the capacitor voltages among the cells by controlling the amplitude of the fundamental-frequency component on the circulating current. A new control method based on the power flow analysis is employed, and its effectiveness is verified by circuit simulation.

    DOI： 10.1541/ieejias.132.659

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  • Reverse-Recovery Analysis of Parallel-Connected pin Diodes Using a Physics-Based Device Model Reviewed

    Takeshi Horiguchi, Takayuki Sugimoto, Shinji Tominaga, Hiroaki Urushibata, Hideaki Fujita, Hirofumi Akagi, Shinichi Kinouchi, Takeshi Oi

    IEEJ Trans. IA   vol. 132 ( no. 5 )   566 - 573   2012.5

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    This paper presents a reverse-recovery analysis of parallel-connected pin diodes using a physics-based device model. Since the pin diode model is based on a physical equation, the excess carrier distribution in the drift layer is estimated. A precise device model enables us to understand the transient characteristics of the parallel-connected pin diodes.We investigated the reverse-recovery characteristics of parallel-connected pin diodes by using a physics-based pin diode model. A difference in the wiring inductance or device temperature between the two pin diodes causes a transient current imbalance.Complicated reverse-recovery current waveforms are observed under both conditions—a difference in the wiring inductance and a difference in the device temperature. They result from a difference in the starting time of forming each depletion layer between the two pin diodes. Simulation results are in good agreement with experimental ones within an error of 10% in terms of the reverse-recovery loss. We find that a precise physics-based pin diode model is very useful when designing a power electronics apparatus.

    DOI： 10.1541/ieejias.132.566

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  • 研究グループ紹介：東京工業大学 パワーエレクトロニクス研究室

    藤田英明

    電気学会論文誌Ｄ（産業応用部門誌）   132 ( 12 )   NL12_14 - NL12_14   2012

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    Language：Japanese   Publishing type：Rapid communication, short report, research note, etc. (bulletin of university, research institution)   Publisher：The Institute of Electrical Engineers of Japan  

    DOI： 10.1541/ieejias.132.NL12_14

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  • A Parameters Extraction Procedure Based on Integrated Evaluation of Static and Dynamic Characteristics -Application to a pin Diode Model- Reviewed

    Takashi Toyama, Shinji Tominaga, Hiroaki Urushibata, Hideaki Fujita, Hirofumi Akagi, Shinichi Kinouchi, Takeshi Oi

    IEEJ Trans. IA   vol. 131 ( no. 7 )   864 - 872   2011.7

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    This paper proposes a parameters extraction procedure based on the integrated evaluation of static and dynamic characteristics. The existing procedure available for various model is based on formal optimization with direct search, but it yields static characteristics with low accuracy, and its computation cost is high. The proposed procedure helps solve these problems since static characteristic evaluation is added to an objective function and the search range is narrowed. Validation with the simulation results of parameters optimization for a pin diode model demonstrates that the proposed procedure has high accuracy and low computation cost.

    DOI： 10.1541/ieejias.131.864

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  • Dynamic electrothermal simulation using a device model for a PWM inverter

    IWATA Yasuaki, TOMINAGA Shinji, NISHIMURA Tadashi, FUJITA Hideaki, AKAGI Hirofumi, HORIGUCHI Takeshi, KINOUCHI Shin-ichi, OI Takeshi

    2012 ( no. SPC-12-016 )   91 - 96   2011.6

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  • Operating Performance of Parallel-Connected pin Diodes Using a Physics-Based Device Model : Reverse-Recovery Analysis Considering Carrier Dynamics

    Takayuki Sugimoto, Shinji Tominaga, Hiroaki Urushibata, Hideaki Fujita, Hirofumi Akagi, Takeshi Horiguchi, Shin-ichi Kinouchi, Takeshi Oi

    2011 ( no. SPC-11-017 )   97 - 102   2011.1

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  • Analysis and control of the heat distribution in a zone-control induction heating system Reviewed

    Pham Ngoc Ha, Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida.

    IEEJ Trans. IA   vol. 130 ( no. 7 )   926 - 932   2010.7

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    DOI： 10.1541/ieejias.130.926

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  • A three-phase solar power conditioner using a single-phase PWM control method Reviewed

    Hideaki Fujita, Ryou Suzuki

    IEEJ Trans. IA   vol. 130 ( no. 2 )   173 - 180   2010.2

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    DOI： 10.1541/ieejias.130.173

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  • A Parameter-Extraction Procedure Based on Integrated Evaluation of Static and Dynamic Characteristics : Its Application to a pin Diode Model

    TOYAMA Takashi, TOMINAGA Shinji, URUSHIBATA Hiroaki, FUJITA Hideaki, AKAGI Hirofumi, KINOUCHI Shinichi, OI Takeshi

    2010 ( No. SPC-10-015 )   89 - 94   2010.1

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  • Analysis and control of heat distribution in a zone-control induction heating system

    Pham Ngoc Ha, Hideaki Fujita, Naoki Uchida, Kazuhiro Ozaki

    IEEJ Transactions on Industry Applications   130 ( 7 )   11 - 932   2010

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  • A three-phase solar power conditioner using a single-phase PWM control method

    Hideaki Fujita, Ryo Suzuki

    IEEJ Transactions on Industry Applications   130 ( 2 )   173 - 180   2010

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  • A resonant gate-drive circuit capable of high-frequency and high-efficiency operation

    Hideaki Fujita

    IEEE Transactions on Power Electronics   25 ( 4 )   962 - 969   2010

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  • Dynamic Performance of a Current-Phase Control Method for Zone-Control Induction Heating Systems Reviewed International journal

    Ha Pham Ngoc, Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    IEEE Energy Conversion Congress and Exposition   129 ( 7 )   833 - 839   2009.9

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  • A Single-Phase Utility-Interface Circuit Without Any AC Inductor nor EMI Filter Reviewed International journal

    Hideaki Fujita

    IEEE Transaction on Industry Applications   vol. 45 ( no. 5 )   1860 - 1867   2009.9

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    DOI： 10.1109/TIA.2009.2027144

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  • Control and performance of a single-phase utility-interface converter without any ac inductor nor EMI filter Reviewed

    Hideaki Fujita, Shigenori Kakuno

    IEEJ Trans. IA   vol. 129 ( no. 7 )   731 - 737   2009.7

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    DOI： 10.1541/ieejias.129.731

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  • Dynamic performance of a current-phase control method for zone-control induction heating systems Reviewed

    Pham Ngoc Ha, Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida.

    IEEJ Trans. IA   vol. 129 ( no. 7 )   691 - 697   2009.7

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    DOI： 10.1541/ieejias.129.691

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  • A resoant switched-capacitor converter for voltage balancing of several capacitors connected in series Reviewed

    Kenichiro Sano, Hideaki Fujita

    IEEJ Trans. IA   Vol. 129 ( No. 6 )   628 - 635   2009.6

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    DOI： 10.1541/ieejias.129.628

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  • A Resonant Gate-Drive Circuit Capable of High-Frequency and High-Efficiency Operation Reviewed International journal

    Hideaki Fujita

    IPEMC 2009   25 ( 4 )   351 - 357   2009.5

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  • A Single-Phase Active Filter Using an H-Bridge PWM Converter With a Sampling Frequency Quadruple of the Switching Frequency Reviewed International journal

    Hideaki Fujita

    IEEE Transaction on Power Electronics   vol. 24 ( no. 4 )   934 - 941   2009.4

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    Language：English   Publisher：IEEE  

    DOI： 10.1109/TPEL.2008.2009302

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  • Study of a dc-voltage equalizing circuit and a zero-sequence voltage control method for a diode-clamped linear amplifier Reviewed

    Hideaki Fujita, Masanori Ishigaki

    IEEJ Trans. IA   vol. 129 ( no. 3 )   303 - 310   2009.3

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    This paper proposes a dc-voltage equalizing circuit for a diode-clamped linear amplifier (DCLA). The DCLA consists of series-connected complementary MOSFETs and diode clamping circuits, which has an experimental efficiency as high as 90% without switching operation. The DCLA requires a dc-voltage equalizing circuit to divide the dc voltage into several levels. The proposed dc-voltage equalizing circuit enables to use a diode rectifier with a smoothing capacitor as a power supply for the DCLA. Moreover, zero-sequence voltage control is proposed to improve efficiency of the DCLA. As a result, a prototype twelve-series DCLA demonstrates an experimental efficiency as high as 94.7%.

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  • Single-Phase Active Filter Using an H-Bridge PWM Converter With a Sampling Frequency Quadruple of the Switching Frequency

    Hideaki Fujita

    IEEE TRANSACTIONS ON POWER ELECTRONICS   24 ( 3-4 )   934 - 941   2009.3

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  • Study of a dc-voltage equalizing circuit and a zero-sequence voltage control method for a diode-clamped linear amplifier Reviewed

    Naoya Yamashita, Hideaki Fujita

    IEEJ Trans. IA   vol. 129 ( no. 1 )   102 - 108   2009.1

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    DOI： 10.1541/ieejias.129.102

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  • 多直列接続したコンデンサの電圧均一化を目的とした共振形スイッチトキャパシタコンバータ

    佐野 憲一朗, 藤田 英明

    電気学会論文誌D   129 ( 6 )   628 - 635   2009

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  • A resonant gate-drive circuit for fast high-voltage power semiconductor devices with optical isolation of both control signal and power supply

    Masanori Ishigaki, Hideaki Fujita

    IEEJ Transactions on Industry Applications   129 ( 3 )   9 - 310   2009

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  • Control and performance of a single-phase utility-interface converter without any ac inductor nor EMI filter

    Hideaki Fujita, Shigenori Kakuno

    IEEJ Transactions on Industry Applications   129 ( 7 )   9 - 737   2009

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  • Study of a DC-voltage equalizing circuit and a zero-sequence voltage control method for a diode-clamped linear amplifier

    Naoya Yamashita, Hideaki Fujita

    IEEJ Transactions on Industry Applications   129 ( 1 )   13 - 108   2009

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  • Voltage-balancing circuit based on a resonant switched- capacitor converter for multilevel inverters Reviewed International journal

    Kenichiro Sano, Hideaki Fujita

    IEEE Transactions on Industry Applications   Vol. 44 ( No. 6 )   1768 - 1776   2008.11

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  • A Single-Phase Utility-Interface Circuit without any AC Inductor nor EMI Filter Reviewed International journal

    Hideaki Fujita

    IEEE IAS Annual Meeting   vol. 1 ( 5 )   1 - 7   2008.10

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  • A single-phase active filter using an H-Bridge PWM converter with a sampling frequency quadruple of the switching frequency Reviewed International journal

    Hideaki Fujita

    IEEE PESC 2008   vol. 1 ( 5 )   2882 - 2888   2008.6

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  • A single-phase active filterusing an H-bridge PWM converter with a sampling frequency quadruple of the switching frequency Reviewed

    Hideaki Fujita, Kenji Hirasaki

    IEEJ Trans. IA   Vol. 128 ( No. 5 )   615 - 622   2008.5

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    DOI： 10.1541/ieejias.128.615

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  • Design and Experimentation of a Dynamic Voltage Restorer Capable of Significantly Reducing an Energy-Storage Element Reviewed International journal

    T. Jimichi, H. Fujita, H. Akagi

    IEEE Transactions on Industry Applications   vol. 44 ( no. 3 )   817 - 825   2008.5

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  • An Approach to Eliminating DC Magnetic Flux From the Series Transformer of a Dynamic Voltage Restore Reviewed International journal

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Industry Applications   Vol. 44 ( No. 3 )   809 - 816   2008.5

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  • Performance of a Diode-Clamped Linear Amplifier Reviewed International journal

    Hideaki Fujita, Naoya Yamashita

    IEEE Transaction on Power Electronics   Vol. 23 ( No. 2 )   824 - 831   2008.3

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  • A Zone-Control Induction Heating (ZCIH) System for Semiconductor Processing Reviewed

    Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    IEEJ Trans. IA   vol. 128 ( no. 3 )   296 - 302   2008.3

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    DOI： 10.1541/ieejias.128.296

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  • A 6.6-kV Transformerless STATCOM Based on a Five-Level Diode-Clamped PWM Converter: System Design and Experimentation of a 200-V 10-kVA Laboratory Model Reviewed International journal

    Shinsuke Yonetani, Yohei Kondo, Hirofumi Akagi, Hideaki Fujita

    IEEE Transactions on Industry Applications   vol. 44 ( no. 2 )   672 - 680   2008.3

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  • A Dynamic Tuning Method for Distributed Active Filter Systems Reviewed International journal

    Tzung-Lin Lee, Po-Tai Cheng, Hirofumi Akagi, Hideaki Fujita

    IEEE Transaction on Industry Applications   Vol. 44 ( No. 2 )   612 - 623   2008.3

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  • A Resonant Switched-Capacitor Converter for Balancing of Several Series-Connected Capacitors

    SANO Kenichiro, FUJITA Hideaki

    2008 ( No. SPC-08-8 )   49 - 54   2008.1

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  • Dynamic control and performance of a resonant switched-capacitor converter based on phase-shift control

    Kenichiro Sano, Hideaki Fujita

    IEEJ Transactions on Industry Applications   128 ( 10 )   6 - 1197   2008

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  • A zone-control induction heating (ZCIH) system for semiconductor processing

    Hideaki Fujita, Kazuhiro Ozaki, Naoki Uchida

    IEEJ Transactions on Industry Applications   128 ( 3 )   18 - 302   2008

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  • A Control Method for a Single-Phase Active Filter Capable of Reducing its DC Capacitor Reviewed

    Kenji Hirasaki, Hideaki Fujita

    IEEJ Trans. IA   vol. 127 ( no. 11 )   1117 - 1124   2007.11

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    Language：Japanese   Publisher：Institute of Electrical Engineering in Japan  

    DOI： 10.1541/ieejias.127.1117

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  • A Resonant Gate-Drive Circuit Capable of High-Frequency and High-Efficiency Operation Reviewed International journal

    Masanori Ishigaki, Hideaki Fujita

    IEEJ Trans. IA   127 ( 10 )   1090 - 1096   2007.10

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    Language：Japanese   Publisher：Institute of Electrical Engineering in Japan  

    DOI： 10.1541/ieejias.127.1090

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  • Dynamic Behavior of a 21-Level BTB-Based Power-Flow Controller Under Single-Line-to-Ground Fault Conditions Reviewed International journal

    Makoto Hagiwara, Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IEEE Transaction on Industry Applications   Vol. 43 ( No. 5 )   1379 - 1387   2007.9

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    Language：English   Publisher：IEEE  

    DOI： 10.1109/TIA.2007.904437

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  • Dynamic Control and Performance of a Resonant Switched-Capacitor Converter Based on Phase-Shift Control

    Kenichiro Sano, Hideaki Fujita

    IEEJ Japan Industry Application Society Conference   Vol. 1 ( No. 120 )   591–596 - 1197   2007.8

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    DOI： 10.1541/ieejias.128.1190

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  • Voltage-Regulation Performance of a Shunt Active Filter Intended for Installation on a Power Distribution System Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Power Electronics   22 ( 3 )   1046 - 1053   2007.5

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  • A 6.6-kV Transformerless STATCOM Based on a Five-Level Diode-Clamped Converter Reviewed International journal

    Yosuke Kondo, Hideaki Fujita, Hirofumi Akagi

    IEEJ Trans. IA   127 ( 5 )   493 - 500   2007.5

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    Language：Japanese   Publisher：The Institute of Electrical Engineers of Japan  

    This paper discusses a 6.6-kV transformerless STATCOM intended for installation on industrial and utility distribution systems in the near future. In addition, this paper provides experimental results obtained from a laboratory model rated at 200V and 10kVA. The authors propose such a control method as to superimpose a 6th-harmonic zero-sequence component on each of three-phase voltage references. This helps to stabilize the voltage of the inner midpoint in the dc link. As a result, the laboratory model installs two bi-directional buck-boost choppers on the dc link for the porpose of stabilizing the voltages of two outer midpoints. Experimental results obtained from the laboratory model verify the validity of the system design, giving promise of the viability of the 6.6-kV transformerless STATCOM.

    DOI： 10.1541/ieejias.127.493

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  • A New Control Method for Suppression of the DC Flux Induced in Series Transformers for a Dynamic Voltage Restorer Reviewed International journal

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    IEEJ Trans. IA   Vol. 127 ( No. 3 )   308 - 314   2007.3

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    This paper proposes a new suppression method of magnetic-flux deviation in series transformers used in a dynamic voltage restorer. A dc flux as well as an ac flux appears in the series transformers at the beginning of voltage-sag compensation. Since an amount of dc flux depends on a phase angle of the source voltage at the beginning of compensation, the sum of an ac flux and a dc flux may reach twice the rated flux. Therefore, the cross section of a series-transformer core should be designed twice as large as that of a generally-designed transformer, in order to avoid flux saturation. The proposed method to eliminate dc flux from the series transformer makes the compensating voltage zero for a short duration. As a result, only an ac flux appears in the series transformer, thus allowing us to use a generally-designed transformer. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to verify the viability of the proposed method.

    DOI： 10.1541/ieejias.127.308

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  • A New Control Method for Suppression of the DC Magnetic Flux Induced in Series Transformers Used for a Dynamic Voltage Restorer

    JIMICHI Takushi, FUJITA Hideaki, AKAGI Hirofumi

    IEEJ Transactions on Industry Applications   127 ( 3 )   308 - 314   2007

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    Language：Japanese   Publisher：The Institute of Electrical Engineers of Japan  

    This paper proposes a new suppression method of magnetic-flux deviation in series transformers used in a dynamic voltage restorer. A dc flux as well as an ac flux appears in the series transformers at the beginning of voltage-sag compensation. Since an amount of dc flux depends on a phase angle of the source voltage at the beginning of compensation, the sum of an ac flux and a dc flux may reach twice the rated flux. Therefore, the cross section of a series-transformer core should be designed twice as large as that of a generally-designed transformer, in order to avoid flux saturation. The proposed method to eliminate dc flux from the series transformer makes the compensating voltage zero for a short duration. As a result, only an ac flux appears in the series transformer, thus allowing us to use a generally-designed transformer. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to verify the viability of the proposed method.

    DOI： 10.1541/ieejias.127.308

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  • A 6.6-kV Transformerless STATCOM Based on a Five-Level Diode-Clamped Converter : Experiment by the Three-Phase Laboratory Model Rated at 200V and 10kVA

    KONDO Yosuke, FUJITA Hideaki, AKAGI Hirofumi

    IEEJ Transactions on Sensors and Micromachines   127 ( 5 )   493 - 500   2007

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    Language：Japanese   Publisher：The Institute of Electrical Engineers of Japan  

    This paper discusses a 6.6-kV transformerless STATCOM intended for installation on industrial and utility distribution systems in the near future. In addition, this paper provides experimental results obtained from a laboratory model rated at 200V and 10kVA. The authors propose such a control method as to superimpose a 6th-harmonic zero-sequence component on each of three-phase voltage references. This helps to stabilize the voltage of the inner midpoint in the dc link. As a result, the laboratory model installs two bi-directional buck-boost choppers on the dc link for the porpose of stabilizing the voltages of two outer midpoints. Experimental results obtained from the laboratory model verify the validity of the system design, giving promise of the viability of the 6.6-kV transformerless STATCOM.

    DOI： 10.1541/ieejias.127.493

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  • A control method for a single-phase active filter capable of reducing its dc capacitor

    Kenji Hirasaki, Hideaki Fujita

    IEEJ Transactions on Industry Applications   127 ( 11 )   2 - 1124   2007

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  • ダイオードクランプ回路を用いた高効率線形増幅回路

    藤田 英明

    電気学会論文誌D   127 ( 1 )   9 - 16   2007

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  • A resonant gate-drive circuit capable of high-frequency and high-efficiency operation

    Masanori Ishigaki, Hideaki Fujita

    IEEJ Transactions on Industry Applications   127 ( 10 )   8 - 1096   2007

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  • Dynamic Behavior of a 21-Level BTB-Based Power-Flow Controller Under Single-Line-to-Ground Fault Conditions

    Makoto Hagiwara, Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IEEE Transaction on Industry Applications   43 ( 5 )   1379 - 1387   2007

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  • Dynamic Control and Performance of a Unified Power Flow Controller for Stabilizing an AC Transmission System Reviewed

    H. Fujita, H. Akagi, Y.Watanabe

    IEEE Transactions on Power Electronics   Vol. 21 ( No. 4 )   1013 - 1020   2006.7

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  • A voltage flicker compensator for distribution networks with a voltage detecting method

    NAKAHARA Chieko, FUJITA Hideaki, AKAGI Hirofumi, FUJII Shigeo

    2006 ( 1 )   5 - 10   2006.3

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  • A 21-Level (Line-toLine) BTB System Based on Series Connection of Sixteen Converter Cells ---Experimental Verifications by a 200-V, 20-kW Laboratory System--- Reviewed

    Makoto Hagiwara, Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IEEJ Trans. IA   126 ( 3 )   352 - 359   2006.3

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  • Dynamic Behavior of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition : Experimental Verification by a 200-V, 20-kW Laboratory System

    HAGIWARA Makoto, WADA Keiji, FUJITA Hideaki, AKAGI Hirofumi

    IEEJ Transactions on Sensors and Micromachines   126 ( 3 )   352 - 359   2006

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    This paper deals with the dynamic behavior of a 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells under a single-line-to-ground fault condition. A laboratory system rated at 200V and 20 kW was designed and built up to confirm the validity of the system. Experimental results obtained from the system lead to the following conclusions: i) The BTB system has a capability of reducing both negative-sequence voltage and current appearing during the fault. ii) A dc-capacitor voltage regulator that has been already developed by the authors makes it possible to suppress the dc-voltage fluctuation sufficiently. iii) Flux fluctuations in transformers used for the system strongly depend on a voltage depth during the fault. These would make a significant contribution to putting the BTB system into practical use.

    DOI： 10.1541/ieejias.126.352

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  • Experimental Verification of a Dynamic Voltage Restorer Capable of Significantly Reducing an Energy-Storage Element

    T. Jimichi, H. Fujita, H. Akagi

    IEEJ Transactions on Industry Applications   125 ( 12 )   1153 - 1160   2005.12

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    This paper deals with a dynamic voltage restorer (DVR) characterized by installing the shunt converter at the load side. The DVR can compensate for the load voltage when a voltage sag appears in the supply voltage. An existing DVR requires a large capacitor bank or other energy-storage elements such as double-layer capacitors or batteries. The DVR presented in this paper requires only a small dc capacitor intended for smoothing the dc-link voltage. Moreover, three control methods for the series converter are compared and discussed to reduce the series-converter rating, paying attention to the zero-sequence voltages included in the supply voltage and the compensating voltage. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to verify the viability of the system configuration and the control methods.

    DOI： 10.1541/ieejias.125.1153

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  • Pulse-Density Modulation of a High-Frequency Voltage-Source Inverter for Atmospheric-Pressure Plasma Generation

    Takeo Nakatsuka, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   125 ( 5 )   413 - 419   2005.9

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  • A Suppressing Method of Flux Deviation Occurring in Series Transformers When a DVR Starts Voltage-Sag Compensation

    Takushi Jimichi, Hideaki Fujita, Hirofumi Akagi

    2005 ( No. SPC-05-59 )   7 - 12   2005.6

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  • Pulse-Density Modulation of a High-Frequency Voltage-Source Inverter for Atmospheric-Pressure Plasma Generation

    Takeo Nakatsuka, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   125 ( 5 )   413 - 419   2005.5

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  • A high-efficiency diode-clamped linear amplifier International journal

    Hideaki Fujita, Hiofumi Akagi

    IPEC 2005   127 ( 1 )   368 - 374   2005.4

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  • A 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter Cells-Experimental Verifications by a 200-V, 20-kW Laboratory System-

    Makoto Hagiwara, Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   125 ( 4 )   397 - 404   2005.4

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  • Performance of a Pulse-Density-Modulated Inverter for Induction Heating Applications

    大井 一伸, Hideaki Fujita, Hirofumi Akagi

    2005 ( No. SPC-05-10 )   9 - 14   2005.1

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  • A 6.6-kV Transformer-less STATCOM Based on a Five-Level Diode-Clamped Converter : Experiments of the Laboratory Model rated at 200V and 10kVA

    米谷 心助, Hideaki Fujita, Hirofumi Akagi

    2005 ( No. SPC-05-22 )   7 - 12   2005.1

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  • Dynamic Behaviors of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition : Experimental Verifications by a 200-V, 20-kW Laboratory System

    Hideaki Fujita, Hirofumi Akagi, Hideaki Fujita, Hirofumi Akagi

    2005 ( No. SPC-05-21 )   1 - 6   2005.1

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  • Control and Performance of a PWM Rectifier with an FPGA-Based Current Controller

    田原 潤, Hideaki Fujita, Hirofumi Akagi

    2005 ( No. SPC-05-14 )   33 - 38   2005.1

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  • Experimental Verification of a Dynamic Voltage Restorer Capable of Significantly Reducing an Energy-Storage Element

    T. Jimichi, H. Fujita, H. Akagi

    IEEJ Transactions on Industry Applications   125 ( 12 )   1153 - 1160   2005

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    This paper deals with a dynamic voltage restorer (DVR) characterized by installing the shunt converter at the load side. The DVR can compensate for the load voltage when a voltage sag appears in the supply voltage. An existing DVR requires a large capacitor bank or other energy-storage elements such as double-layer capacitors or batteries. The DVR presented in this paper requires only a small dc capacitor intended for smoothing the dc-link voltage. Moreover, three control methods for the series converter are compared and discussed to reduce the series-converter rating, paying attention to the zero-sequence voltages included in the supply voltage and the compensating voltage. Experimental results obtained from a 200-V, 5-kW laboratory system are shown to verify the viability of the system configuration and the control methods.

    DOI： 10.1541/ieejias.125.1153

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  • Control and Performance of a Dynamic Voltage Restorer with a Small Energy Storage Device

    JIMICHI Takushi, FUJITA Hideaki, AKAGI Hirofumi

    2004 ( 136 )   61 - 66   2004.11

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  • Feasibility Study of a 6.6 kV, 1MW Transformerless BTB-Based Loop Controller -System Design and Zero-Sequence-Current Reduction-

    Shinsuke Yonetani, Hideaki Fujita, HIrofumi Akagi, Naotaka Okada

    Transactions of IEEJ   124 ( 11 )   1349 - 1356   2004.11

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  • Discussions and Comparisons between Comprehensive Harmonic Detection and Specific Harmonic Detection in a Shunt Active Filter for Installation on a Power Distribution System

    Hiroshi Yamashita, Pichai Jintakosonwit, Hideaki Fujita, Hirofumi Akagi, Junya Shinohara

    IEEJ Transactions on Industry Applications   124 ( 6 )   622 - 629   2004.9

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  • Discussions and Comparisons between Comprehensive Harmonic Detection and Specific Harmonic Detection in a Shunt Active Filter for Installation on a Power Distribution System Reviewed

    山下博史, Jintakosonwit, Pichai, 藤田英明, 赤木泰文, 篠原純也

    Transactions of IEEJ   124 ( 6 )   622 - 629   2004.6

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  • A Diode-Clamped Linear Amplifier

    FUJITA H, MITUDA K, AKAGI H

    Technical report of IEICE. Energy engineering in electronics and communications   104 ( 45 )   19 - 24   2004.5

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    This paper proposes a novel power converter without any switching operation, which works as a linear amplifier. The main circuit of the proposed converter consists of twelve MOSFETs connected in series, 12 dc power supplies and clamp diodes like a diode-clamped multi-level inverter circuit. Two MOSFETs of 12 series MOSFETs are used at saturating state just like a linear amplifier, while the other MOSFETs operates at on or off state like an inverter circuit. As a result, the proposed converter circuit achieves an acceptable efficiency as high as 90% without any switching operation. Experimental results demonstrate that the proposed converter has capability of driving a three-phase induction motor rated at 2.2 kW.

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  • Experimental Verifications by a 200-V, 10-kW Multi-Level BTB System

    HAGIWARA Makoto, FUJITA Hideaki, AKAGI Hirofumi

    2004 ( 4-139 )   81 - 86   2004.3

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  • A Resonant Gate-Drive Circuit without Gate-Charge Losses for a Power MOSFET

    中塚 健夫, Hideaki Fujita, Hirofumi Akagi

    2004 ( No. SPC-04-60 )   75 - 80   2004.1

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  • Feasibility Study of a 6.6 kV, 1MW Transformerless BTB-Based Loop Controller—System Design and Zero-Sequence-Current Reduction

    Shinsuke Yonetani, Hideaki Fujita, Hirofumi Akagi, Naotaka Okada

    IEEJ Transactions on Power and Energy   124 ( 11 )   1349 - 1356   2004

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  • Voltage Regulation Performance of a Shunt Active Filter Intended for Installation on a Power Distribution System

    山下 博史, 藤田 英明, 赤木 泰文, 篠原 純也, 箱田 博俊

    Transactions of IEEJ   123 ( 11 )   1351 - 1358   2003.11

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  • The Occurrence of DC Magnetic-Flux Deviation, and its Suppression, in a Doubly-Fed Flywheel Generator System.

    Hideaki Fujita, Hirofumi Akagi, Mitsugi Tan, Satoshi Ogasawara

    IEEJ Transactions on Industry Applications   123 ( 3 )   286 - 293   2003.9

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  • Voltage Regulation Performance of a Shunt Active Filter Intended for Installation on a Power Distribution System

    Hiroshi Yamashita, Pichai Jintakosonwit, Hideaki Fujita, Hirofumi Akagi, Junya Shinohara, Hirotoshi Hakoda

    IEEJ Transactions on Industry Applications   123 ( 11 )   1351 - 1358   2003.9

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  • Pulse Density Modulated Control of a Hige Frequency Voltage Source Inverter Suitable for Atmospheric-Pressure Plasma Generator

    NAKATSUKA T, FUJITA H, AKAGI H, SEZUKURI H, SANO K

    Technical report of IEICE. Energy engineering in electronics and communications   103 ( 38 )   73 - 78   2003.5

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    This paper deals with a new control method of pulse density modulation suitable for generating atmospheric-pressure discharge plasma. The plasma generator in this paper consists of voltage-source inverter, step-up transformer, resonant inductor, and parallel electrode plates. This plasma generator is characterized by generating a high voltage using series resonance between the capacitance of the plates and the resonant inductance. However, a plasma generator requires zero-current interval to reduce streamer discharge. This paper proposes a new control scheme based on pulse density modulation (PDM). The PDM inverter repeats alternate run and stop to adjust the average output voltage. The new control scheme has capability of quickly decreasing the discharge current during the interval, compared with a conventional PDM scheme. As a result, the new scheme makes it possible to eliminate the streamer discharge, leading to a stable plasma generation and processing. Experimental results are shown to verify viability of the proposed PDM scheme.

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  • Performance of a self-commutated BTB HVDC link system under a single-line-to-ground fault condition

    Makoto Hagiwara, Hideak Fujita, Hirofumi Akagi

    IEEE Transactions on Power Electronics   18 ( 1 )   278 - 285   2003

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  • Implementation and performance of cooperative control of shunt active filters for harmonic damping throughout a power distribution system

    Pichai Jintakosonwit, Hideaki Fujita, Hirofumi Akagi, Satoshi Ogasawara

    IEEE Transactions on Industry Applications   39 ( 2 )   556 - 564   2003

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  • The Occurrence of DC Magnetic-Flux Deviation, and its Suppression in a Doubly-Fed Flywheel Generator System

    藤田英明, 赤木泰文, 丹光義, 小笠原悟司

    Transactions of IEEJ   123 ( 3 )   286 - 293   2003

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  • ディジタル電流制御方式とその特性〔含 質疑応答〕

    藤田 英明, 山下 博史, 赤木 泰文

    パワーエレクトロニクス学会誌   29 ( 1 )   93 - 100   2003

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    DOI： 10.5416/jipe2003.29.1_93

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  • Performance of Automatic Gain Adjustment in a Shunt Active Filter Intended for Installation on Power Distribution Systems

    Pichai Jintakosonwit, Hirofumi Akagi, Hideaki Fujita, Satoshi Ogasawara

    IEEJ Transactions on Industry Applications   122 ( 1 )   29 - 36   2002.9

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  • 全ハードウェア構成高速ディジタル電流制御器 電圧飽和時の特性

    白石有貴延, 小笠原悟司, 藤田英明

    電気学会産業応用部門大会講演論文集   2002 ( 3 )   1527 - 1528   2002.8

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  • 都市中心部の配電系統における高調波拡大現象と抑制特性

    藤田英明, 坂本恭二, 小笠原悟司, 赤木泰文, 篠原純也

    電気学会全国大会講演論文集   2002 ( 4 )   282 - 283   2002.3

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  • 400V系インバータに適応可能なアクティブコモンノイズキャンセラ 伝導性EMI抑制効果の検討

    中塚正嗣, 藤田英明, 小笠原悟司

    電気学会全国大会講演論文集   2002 ( 4 )   33 - 34   2002.3

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  • A Doubly‐Fed Flywheel Generator for Load Leveling. Exciting‐Current Control and Suppression of DC‐Flux Saturation.

    丹光義, 藤田英明, 小笠原悟司, 赤木泰文

    電気学会半導体電力変換研究会資料   SPC-02 ( 1-15 )   89 - 94   2002.2

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  • Experimental Discussions of a 16‐Series‐Connected Self‐Commutated Inverter System for Grid Intertie.

    長尾宜昭, 藤田英明, 小笠原悟司, 赤木泰文

    電気学会半導体電力変換研究会資料   SPC-02 ( 16-29 )   17 - 22   2002.2

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  • A Self-Commutated BTB System and its Performance under a Single-Line-to-Ground Fault Condition

    Transactions of IEEJ   122 ( 3 )   280 - 287   2002

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  • Implementation and performance of automatic gain adjustment in a shunt active filter for harmonic damping throughout a power distribution system

    Pichai Jintakosonwit, Hirofumi Akagi, Hideaki Fujita, Satoshi Ogasawara

    IEEE Transactions on Power Electronics   17 ( 3 )   438 - 447   2002

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  • DC Magnetic Deviation, And its Suppression, of a Matching Transformer in a Series Active Filter

    Hiroshi Hasegawa, Sunt Srianthumrong, Hirofumi Akagi, Hideaki fujita

    IEEJ Transactions on Industry Applications   122 ( 7 )   744 - 751   2002

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  • Considerations of a shunt active filter based on voltage detection for installation on a long distribution feeder

    Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Industry Applications   38 ( 4 )   1123 - 1130   2002

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  • A Self-Commutated BTB System and its Performance under a Single-Line-to-Ground Fault Condition Reviewed

    萩原 誠, 赤木 泰文, 藤田 英明

    Transactions of IEEJ   122 ( 3 )   280 - 287   2002

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    This paper deals with a self-commutated BTB (Back-To-Back) system for the purpose of power flow control and/or frequency change in transmission systems. Each BTB unit consists of two sets of 16 three-phase voltage-source converters, and their ac terminals are connected in series each other via 16 three-phase trans-formers. Hence, the BTB unit uses totally 192 switching devices capable of achieving gate commutation. This results in a great reduction of voltage and current harmonics without performing PWM control. Simulation results verify the validity of the proposed system configuration and control scheme not only under a normal operating condition but also under a single-line-to-ground fault condition.

    DOI： 10.1541/ieejias.122.280

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  • Stability analysis of a series active filter integrated with a double-series diode rectifier Reviewed

    Sunt Srianthumrong, Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Power Electronics   17 ( 1 )   117 - 124   2002

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  • Performance of Automatic Gain Adjustment in a Shunt Active Filter Intended for Installation on Power Distribution Systems Reviewed

    Jintakosonwit Pichai, 赤木 泰文, 藤田 英明, 小笠原 悟司

    Transactions of IEEJ   122 ( 1 )   29 - 36   2002

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  • Control and performance of a fully-digital-controlled shunt active filter for installation on a power distribution system

    Pichai Jintakosonwit, Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Power Electronics   17 ( 1 )   132 - 140   2002

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  • DC Magnetic Deviation, and its Suppression, of a Matching Transformer in a Series Active Filter

    長谷川博司, Sunt Srianthumrong, 赤木泰文, 藤田英明

    Transactions of IEEJ   122 ( 7 )   744 - 751   2002

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  • An Active Common‐Noise Canceler Applicable to 400‐V Inverter Systems.

    中塚正嗣, 藤田英明, 小笠原悟司

    電気学会半導体電力変換研究会資料   SPC-01 ( 94-112 )   37 - 42   2001.11

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  • MOSFETを用いた13.56MHz高周波電源の動作特性

    福井二郎, 藤田英明, 小笠原悟司, 赤木泰文, 篠原信一

    電気学会産業応用部門大会講演論文集   2001 ( 3 )   1583 - 1586   2001.8

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  • 交流励磁フライホイール発電機システム 励磁電流制御法と直流偏磁抑制効果

    丹光義, 藤田英明, 小笠原悟司, 赤木泰文

    電気学会産業応用部門大会講演論文集   2001 ( 1 )   555 - 558   2001.8

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  • PLD(Programmable Logic Device)を用いた高速ディジタル電流制御器

    白石有貴延, 藤田英明, 小笠原悟司

    電気学会産業応用部門大会講演論文集   2001 ( 3 )   1579 - 1582   2001.8

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  • Transient Characteristics of a UPFC, and its Effect on Suppressing Power Flow Variation

    Yasuhiro Watanabe, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   121 ( 4 )   508 - 515   2001.4

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  • 配電系統用アクティブフィルタの協調制御―補償電流の分担特性―

    藤田英明, 小笠原悟司, JINTAKOSONWIT Pichai, 赤木泰文, 大原久征

    電気学会全国大会講演論文集   2001 ( 4 )   1451 - 1452   2001.3

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  • Considerations of a Fully-Digital-Controlled Active Filter for Installation on Power Distribution Systems

    Pichai Jintakosonwit, Hirofumi Akagi, Hideaki Fujita

    IEEJ Transactions on Industry Applications   121 ( 3 )   316 - 324   2001.3

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  • Transient analysis of a unified power flow controller and its application to design of the DC-link capacitor

    Hideaki Fujita, Yasufumi Watanabe, Hirofumi Akagi

    IEEE Transactions on Power Electronics   16 ( 5 )   735 - 740   2001

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  • Analysis of Harmonic Propagation in a Power Distribution System: An Application of a Distributed-Constant-Circuit Model

    Keiji Wada, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   120 ( 11 )   1335 - 1342   2000.11

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  • 高調波拡大現象の抑制を目的とした配電系統用アクティブフィルタの分散設置効果

    和田 圭二, 稲辺 晋一, 藤田 英明, 赤木 泰文, 柴丸 昇

    電気学会論文誌 B   120 ( 8/9 )   1045 - 1053   2000.8

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  • 中性点クランプ型エミッタフォロワを用いたアクティブコモンノイズキャンセラ

    安達大輔, 藤田英明, 小笠原悟司, 赤木泰文

    電気学会全国大会講演論文集   2000 ( 4 )   1415 - 1416   2000.3

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  • A Fully-Digital-Controlled Active filter for Installation on Power Distribution Systems

    ジンタコソンビット ピチャイ, Hideaki Fujita, Hirofumi Akagi

    Rec. SPC meeting of IEE Japan, 2000   2000 ( No. SPC-00-51 )   87 - 92   2000.1

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  • A Circuit Configuration and Control Scheme of a BTB (back-to-back) System Based on Gate Commutation

    西崎 順二, Hideaki Fujita, Hirofumi Akagi

    2000 ( No. SPC-00-4 )   19 - 24   2000.1

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  • System Configuration and Control Strategy of a Doubly-Fed Flywheel Generator-Motor : Load-Leveling of the next generation Magnetic Power Supply for a Proton Accelerator

    有田 吉宏, 渡辺 泰広, Hideaki Fujita, Hirofumi Akagi, 佐藤 皓

    2000 ( No. SPC-00-1 )   1 - 6   2000.1

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  • A hybrid active filter for damping of harmonic resonance in industrial power systems

    Hideaki Fujita, Takahiro Yamasaki, Hirofumi Akagi

    IEEE Transactions on Power Electronics   15 ( 2 )   215 - 222   2000

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  • A practical approach to switching-loss reduction in a large-capacity static VAr compensator based on voltage-source inverters

    Hideaki Fujita, Shinji Tominaga, Hirofumi Akagi

    IEEE Transactions on Industry Applications   36 ( 5 )   1396 - 1404   2000

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  • Transient characteristics of a UPFC, and suppression of power flow variation

    WATANABE Yasuhiro, FUJITA Hideaki, AKAGI Hirofumi

    1999 ( 106 )   7 - 12   1999.10

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  • Transient Characteristics of a Unified Power Flow Controller, and Design of the DC Link Capacitor

    Yasuhiro Watanabe, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   119 ( 10 )   1245 - 1251   1999.10

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  • Control Strategy and Site Selection of a Shunt Active Filter for Installation on a Power Distribution System : Analysis of Harmonic Propagation on the basis of a Distributed Constant Circuit

    WADA Keiji, FUJITA Hideaki, AKAGI Hirofumi

    1999 ( 51 )   7 - 12   1999.6

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  • 配電系統用アクティブフィルタの高調波拡大現象抑制効果の実験的検証

    和田 圭二, 藤田 英明, 赤木 泰文, 柴丸 昇

    電気学会論文誌 B   119 ( 2 )   204 - 211   1999.2

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  • A Control Method of a Series Active Filter for Harmonic Reduction in a Large-Capacity Diode Rectifier

    TAKADA Yoshiki, FUJITA Hideaki, AKAGI Hirofumi

    1999 ( 28 )   35 - 40   1999.1

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  • Control and analysis of a unified power flow controller

    Hideaki Fujita, Yasuhiro Watanabe, Hirofumi Akagi

    IEEE Transactions on Power Electronics   14 ( 6 )   1021 - 1027   1999

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  • Control and performance of a pulse-density-modulated series-resonant inverter for corona discharge processes

    Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Industry Applications   35 ( 3 )   621 - 627   1999

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  • A 2-MHz 2-kW voltage-source inverter for low-temperature plasma generators: implementation of fast switching with a third-order resonant circuit

    Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Industry Applications   35 ( 1 )   21 - 27   1999

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  • A 2-MHz 6-kVA voltage-source inverter using low-profile MOSFET modules for low-temperature plasma generators

    Hideaki Fujita, Hirofumi Akagi, Shinichi Shinohara

    IEEE Transactions on Power Electronics   14 ( 6 )   1014 - 1020   1999

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  • A shunt active filter based on voltage detection for harmonic termination of a radial power distribution line

    Hirofumi Akagi, Hideaki Fujita, Keiji Wada

    IEEE Transactions on Industry Applications   35 ( 3 )   638 - 645   1999

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  • Transient Characteristics of a Unified Power Flow Controller, and Design of the DC Link Capacitor

    WATANABE Yasuhiro, FUJITA Hideaki, AKAGI Hirofumi

    1998 ( 92 )   19 - 24   1998.10

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  • A Hybrid Active Filter for Damping of Harmonic Resonance in Industrial Power Systems

    HUJITA Hideaki, YAMASAKI Takahiro, AKAGI Hirofumi

    IEEJ Transactions on Sensors and Micromachines   118 ( 10 )   1193 - 1200   1998.10

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    This paper proposes a hybrid active filter for damping of harmonic resonance in industrial power systems. The hybrid active filter consists of a small-rated active filter and a 5th-turned passive filter. The active filter is controlled to behave as a variable resistor by adjusting a feedback gain which changes from a negative to positive value. The negative resistance cancels a positive resistor inherent in the passive filter, so that the hybrid active filter acts as an ideal passive filter with infinite quality factor. This results in a significant improvement of harmonic damping accompanied by harmonic mitigation, compared with the passive filter used alone. Moreover, the active filter acts as a positive resistor to prevent an excessive harmonic current from flowing into the passive filter. Experimental results obtained from a 20-kW laboratory model verify the viability and effectiveness of the hybrid active filter proposed in this paper.

    DOI： 10.1541/ieejias.118.1193

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  • Control and Performance of a Zero-Current-Switched Three-Phase PWM Inverter Equipped with Resonant Circuits on the AC-Side

    H. Fujita, S. Ogasawara, H. Akagi

    IEEJ Transactions on Industry Applications   118 ( 6 )   748 - 756   1998.6

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  • The unified power quality conditioner: the integration of series and shunt-active filters

    Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Power Electronics   13 ( 2 )   315 - 322   1998.3

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  • Implementation and Performance of a Shunt Active Filter for Installation on a Power Distribution System

    Keiji Wada, Hideaki Fujita, Hirofumi Akagi, Satoru Furutani

    IEEJ Transactions on Industry Applications   118 ( 3 )   417 - 418   1998.3

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    Language：Japanese   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

    DOI： 10.1541/ieejias.118.417

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  • Control Schemes and Transient Characteristics of a High Speed Phase Shifter for Power Flow Control in Power Transmission Systems

    Yasuhiro Watanabe, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   117 ( 11 )   1327 - 1333   1997.11

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  • A Hybrid Active Filter for Damping of Harmonic Resonance in Industrial Power Systems

    YAMASAKI Takahiro, FUJITA Hideaki, AKAGI Hirofumi

    1997 ( 107 )   1 - 6   1997.10

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  • A 2MHz, 2kW Voltage-Source Inverter for Low-Temperature Plasma Generator: Implementation of Fast-Switching with a Third-Order Resonant Circuit

    Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   117 ( 10 )   1262 - 1268   1997.10

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  • An approach to harmonic current-free AC/DC power conversion for large industrial loads: the integration of a series active filter with a double-series diode rectifier

    Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Industry Applications   33 ( 5 )   1233 - 1240   1997.9

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  • Application of Soft-Switching Technique to a DC Voltage-Controlled Static Var Compensator Using Quad-Series Voltage-Source Inverters

    TOMINAGA Shinji, FUJITA Hideaki, AKAGI Hirofumi

    IEEJ Transactions on Sensors and Micromachines   117 ( 4 )   449 - 455   1997.4

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    Language：Japanese   Publisher：The Institute of Electrical Engineers of Japan  

    This paper discusses the potential of applying the soft-switching technique to a dc voltage-controlled static var compensator. The main circuit of the static var compensator (SVC) consists of quad-series voltage-source six-step inverters and four three-phase transformers. The SVC is characterized by a "commutation capacitor" connected in parallel with each switching device, without any additional active or passive element. The commutation capacitor plays an essential role in achieving soft-switching.<br>Experimental results obtained from a small-rated laboratory model of 10kVA verify the operating principle and effectiveness of the soft-switched SVC proposed in this paper. The zero-voltage-switching enables to reduce dv/dt across each switching device, thus resulting in reduced EMI and switching losses.

    DOI： 10.1541/ieejias.117.449

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  • Effect of an Adjustable Speed Rotary Condensor on Power System Stabilization. Computer simulation using EMTDC.

    高橋賢司, 藤田英明, 小笠原悟司, 赤木泰文, 杉原弘章, 甲斐隆章

    電気学会全国大会講演論文集   1997 ( 6 )   6.312-6.313   1997.3

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  • A High-Frequency Inverter of 2MHz 300V 12A for Low-Temperature Plasma Generators

    HIRAO Kuniaki, FUJITA Hideaki, AKAGI Hirofumi

    1997 ( 1 )   19 - 24   1997.1

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  • A Combined System of a Series Active Filter and a Double-Series Diode Rectifier with a DC Smoothing Capacitor

    Hideaki Fujita, Hirofumi Akagi, Masakazu Kohata

    IEEJ Transactions on Industry Applications   116 ( 9 )   910 - 917   1996.9

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  • Analysis and design of a DC voltage-controlled static VAr compensator using quad-series voltage-source inverters

    HIdeaki Fujita, Shinji Tominaga, Hirofumi Akagi

    IEEE Transactions on Industry Applications   32 ( 4 )   970 - 978   1996.7

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  • 配電系統用アクティブ・パッシブ併用フィルタの制御法と高調波拡大現象の抑制効果

    藤田 良一, 藤田 英明, 赤木 泰文

    電気学会研究会資料. SPC, 半導体電力変換研究会   1996 ( 1 )   99 - 107   1996.1

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  • 零電流スイッチング三相電圧形PWMインバータの動作特性

    廣石 正孝, 藤田 英明, 小笠原 悟司, 赤木 泰文

    電気学会研究会資料. SPC, 半導体電力変換研究会   1996 ( 29 )   1 - 8   1996.1

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  • A flicker and harmonic compensator using a series active filter

    Hideaki Fujita, Kiyoto Miyoshi, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   115 ( 12 )   1440 - 1447   1995.12

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  • A NEW POWER FINE CONDITIONER FOR HARMONIC COMPENSATION IN POWER-SYSTEMS

    H AKAGI, H FUJITA

    IEEE TRANSACTIONS ON POWER DELIVERY   10 ( 3 )   1570 - 1575   1995.7

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  • Transient analysis of an advanced static var compensator using quad-series voltage-source PAM inverters

    Shinji Tominaga, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   115 ( 5 )   545 - 552   1995.5

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  • A Zero-Current-Switching Based Three-Phase PWM Inverter. A New Control Scheme Based on Detection of Conduction State of Free-Wheeling Diodes.

    広石正孝, 藤田英明, 小笠原悟司, 赤木泰文

    電気学会全国大会講演論文集   1995 ( 4 )   4.111-4.112   1995.3

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  • Modeling and analysis of high-frequency leakage currents caused by voltage-source PWM inverters

    Satoshi Ogasawara, Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   115 ( 1 )   77 - 83   1995.1

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  • A new power line conditioner for harmonic compensation in power systems

    Hirofumi Akagi, Hdeaki Fujita

    IEEE Transactions on Power Delivery   10 ( 3 )   1570 - 1575   1995

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  • Modeling and Analysis on High-Frequency Leakage currents Caused by PWM Inverters.

    小笠原悟司, 藤田英明, 赤木泰文

    電気学会産業応用部門大会講演論文集   1994   343 - 348   1994.8

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  • A Zero-Current-Switching Based Three-Phase PWM Inverter

    Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   114 ( 5 )   561 - 566   1994.5

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  • Pulse density modulated power control of a voltage-source inverter with a series-resonant circuit suitable for corona discharge treaters

    Hideaki Fujita, Chikashi Sato, Satoshi Ogasawara, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   114 ( 4 )   459 - 466   1994.4

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  • PWMインバータが発生する高周波漏れ電流のモデリングとその実験的検討

    小笠原悟司, 上田邦明, 藤田英明, 赤木泰文

    電気学会全国大会講演論文集   1994 ( 5 )   5.144-5.145   1994.3

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  • Pulse Density Modulation Based Power Control of a 4 kW, 400 kHz Voltage-Source Inverter for Induction Heating Applications Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi

    IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS   32 ( 2 )   111—116 - 286   1993.4

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  • The Combined System of a Series Active Filter and a Shunt Passive Filter -An Optimum Design of the Shunt Passive Filter-

    藤田英明, 赤木泰文

    Transactions of IEEJ   112 ( 2 )   127 - 135   1992.2

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  • The Combined System of a Series Active Filter and a Shunt Passive Filter —An Optimum Design of the Shunt Passive Filter—

    Hideaki Fujita, Hirofumi Akagi

    IEEJ Transactions on Industry Applications   112 ( 2 )   127 - 135   1992

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  • A practical approach to harmonic compensation in power systems-series connection of passive and active filters

    Hideaki Fujita, Hirofumi Akagi

    IEEE Transactions on Industry Applications   27 ( 6 )   1020 - 1025   1991.11

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  • Control Schemes and Compensation Characteristics of an Active Filter Connected in Series with a Passive Filter Reviewed International journal

    Hideaki Fujita, Hirofumi Akagi, 難波江章

    Transactions of IEEJ   Vol. 110 ( No. 6 )   637 - 645   1990.6

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  • Control schemes and compensation characteristics of an active filter connected in series with a passive filter

    Hideaki Fujita, Hirofumi Akagi, Akira Nabae

    IEEJ Transactions on Industry Applications   110 ( 6 )   637 - 645   1990

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Presentations

  • 動的アクチュエータのモデリングによる発熱量損失算出の提案

    稲葉 雅司, 中溝 裕紀, 土方 亘, 大蔵 孝, 安井 龍太, 高原 弘樹, 伏信 一慶, 藤田 英明, 篠田 卓也, 近江 慶太

    自動車技術会2021年春季大会学術講演会  2023.5 

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    Event date： 2023.5

    Language：Japanese   Presentation type：Oral presentation (general)  

    Venue：横浜  

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  • Switching oss analysis in a single-phase PWM control method

    2010 

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  • A Resonant Gate-Drive Circuit with Optically-Isolated Control Signal and Power Supply for Fast-Switching and High-Voltage Power Semiconductor Devices

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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    Presentation type：Poster presentation  

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  • Analysis and Control of the Heat Distribution in a Zone-Control Induction Heating System

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • Reducing Output Current Ripple of Resonant Switched-Capacitor Step-up Converter with Interleaving Technique

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • A High-Efficiency Solar Power Conditioner Using a Zigzag-Connected Chopper Converter

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • ゾーンコントロール誘導加熱装置の電流制御法

    平成22年電気学会全国大会  2010 

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  • 可逆チョッパを直列接続したソーラーパワーコンディショナ

    平成22年電気学会全国大会  2010 

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  • 位相シフト制御法を適用した共振形スイッチトキャパシタコンバータ ―インターリーブ方式による出力電流リプル低減効果―

    平成22年電気学会全国大会  2010 

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  • 一相PWM制御法を用いた三相PWM整流器の共振現象

    平成22年電気学会全国大会  2010 

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  • 一相PWM制御三相インバータのスイッチング損失解析

    平成22年電気学会全国大会  2010 

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  • 可逆チョッパ回路を直列接続したソーラーパワーコンディショナ

    電気学会 半導体電力変換研究会  2010 

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  • Analysis and Control of the Heat Distribution in a Zone-Control Induction Heating System

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • 静特性と動特性の統合評価に基づくパラメータ抽出手法 ―pinダイオードモデルへの応用―

    電気学会 半導体電力変換研究会  2010 

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  • A High-Efficiency Solar Power Conditioner Using a Zigzag-Connected Chopper Converter

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • A Resonant Gate-Drive Circuit with Optically-Isolated Control Signal and Power Supply for Fast-Switching and High-Voltage Power Semiconductor Devices

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • Solar power conditioner using series-connected bi-directional choppers

    2010 

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  • Reducing Output Current Ripple of Resonant Switched-Capacitor Step-up Converter with Interleaving Technique

    IPEC-Sapporo 2010 -ECC Asia-  2010 

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  • Resonant phenomenon in a single-phase PWM control method

    2010 

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  • A new curent control method for zone-control induction heating systems

    2010 

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  • A resonant switched-capacitor converter applying a phase-shift control method -Reduction of output current ripple in interleaving operation-

    2010 

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  • コンデンサを用いた高効率・小型なDC－DCコンバータ

    佐野憲一朗, 藤田英明

    IEEE Tokyo Young Researchers Workshop 2009  2009.12 

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    Venue：東京  

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  • A Dynamic Voltage Restorer Equipped With a High-Frequency Isolated DC-DC Converter

    IEEE Energy Conversion Congress and Exposition  2009 

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  • A Reduction Method of a DC Capacitor in a Single-Phase Active Power Filter

    International Conference on Power Electronics and Drive Systems  2009 

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  • Dynamic Performance of a Current-Phase Control Method for Zone-Control Induction Heating Systems

    IEEE Energy Conversion Congress and Exposition  2009 

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  • A resonant switched-capacitor converter for voltage balancing of series-connected capacitors

    International Conference on Power Electronics and Drive Systems  2009 

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  • Improving Dynamic Performance and Efficiency of a Resonant Switched-Capacitor Converter Based on Phase-Shift Control

    IEEE Energy Conversion Congress and Exposition  2009 

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  • A Three-Phase Voltage-Source Solar Power Conditioner Using a Single-Phase PWM Control Method

    IEEE Energy Conversion Congress and Exposition  2009 

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  • Analysis and Control of the Heat Distribution in a Zone-Control Induction Heating System

    Industry Application Society Conference  2009 

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  • A Three-phase STATCOM Using a Single-Phase PWM Control Method

    Industry Application Society Conference  2009 

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  • Voltage Regulating Performance and Efficiency of a Resonant Switched-Capacitor Converter Applying a Phase-Shift Control

    Industry Application Society Conference  2009 

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  • Effect of Carrier Lifetime Zoning on pin Diode Model

    Industry Application Society Conference  2009 

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  • A Resonant Gate-Drive Circuit Capable of High-Frequency and High-Efficiency Operation

    International Power Electronics and Motion Control Conference - ECCE Asia  2009 

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  • Recent Technology of New Power Converter Circuit for Utility Power Line Interface toward Integration

    Industry Application Society Conference  2009 

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  • A filter-less EMI-free power converter using a diode-clamped linear amplifier

    2009 

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  • Voltage regulating performance of a resonant seitched-cpacitor converter applying a phase-shift control

    2009 

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  • Switching loss reduction using a single-phase PWM control method

    2009 

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  • A dynamic voltage restorer characterized by the use of a high-frequency isolated dc/dc converter

    2009 

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  • A Filter-Less EMI-Free Power Converter Using a Diode-Clamped Linear Amplifier

    The Applied Power Electronics Conference and Exposition  2009 

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  • A Dynamic Voltage Restorer Equipped With a High-Frequency Isolated DC-DC Converter

    IEEE Energy Conversion Congress and Exposition  2009 

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  • ゾーンコントロール誘導加熱システムの発熱分布

    産業応用部門大会  2009 

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  • 一相PWM制御法を用いた三相無効電力補償装置

    産業応用部門大会  2009 

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  • 位相シフト制御法を適用した共振型スイッチトキャパシタコンバータの出力電圧調整特性と効率評価

    産業応用部門大会  2009 

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  • pinダイオードモデルにおけるライフタイム分布の影響

    産業応用部門大会  2009 

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  • 交流インダクタとEMIフィルタを用いない三相交流電源インターフェイス回路

    電気学会 半導体電力変換研究会  2009 

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  • 集積化を志向した交流電源インターフェイスの新しい回路技術動向

    産業応用部門大会  2009 

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  • 位相シフト制御法を適用した共振型スイッチトキャパシタコンバータの電圧調整特性

    平成21年電気学会全国大会  2009 

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  • A Resonant Gate-Drive Circuit Capable of High-Frequency and High-Efficiency Operation

    International Power Electronics and Motion Control Conference - ECCE Asia  2009 

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  • 高周波絶縁形DC/DCコンバータを用いた瞬時電圧低下補償装置

    平成21年電気学会全国大会  2009 

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  • ダイオードクランプ形線形増幅回路を用いたフィルタレスEMIフリー電力変換回路

    平成21年電気学会全国大会  2009 

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  • 一相PWM制御法のスイッチング損失低減効果

    平成20年電気学会全国大会  2009 

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  • ダイオードクランプ形線形増幅回路の回生特性

    電気学会 半導体電力変換研究会  2009 

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  • A Filter-Less EMI-Free Power Converter Using a Diode-Clamped Linear Amplifier

    The Applied Power Electronics Conference and Exposition  2009 

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  • A Reduction Method of a DC Capacitor in a Single-Phase Active Power Filter

    International Conference on Power Electronics and Drive Systems  2009 

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  • 一相PWM制御法を用いた三相ソーラーパワーコンディショナ

    電気学会 半導体電力変換研究会  2009 

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  • Dynamic Performance of a Current-Phase Control Method for Zone-Control Induction Heating Systems

    IEEE Energy Conversion Congress and Exposition  2009 

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  • A resonant switched-capacitor converter for voltage balancing of series-connected capacitors

    International Conference on Power Electronics and Drive Systems  2009 

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  • Improving Dynamic Performance and Efficiency of a Resonant Switched-Capacitor Converter Based on Phase-Shift Control

    IEEE Energy Conversion Congress and Exposition  2009 

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  • A Three-Phase Voltage-Source Solar Power Conditioner Using a Single-Phase PWM Control Method

    IEEE Energy Conversion Congress and Exposition  2009 

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  • A single-phase active filter using an H-Bridge PWM converter with a sampling frequency quadruple of the switching frequency

    Power Electronics Specialists Conference  2008 

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  • ダイオードクランプ形5レベル変換器用RSCC直流電圧均一化回路の電流定格低減の検討

    産業応用部門大会  2008 

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  • A Single-Phase Utility-Interface Circuit without any AC Inductor nor EMI Filter

    Industry Applications Society Annual Meeting  2008 

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  • ゾーンコントロール誘導加熱システムの発熱分布

    平成20年電気学会全国大会  2008 

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  • A single-phase active filter using an H-Bridge PWM converter with a sampling frequency quadruple of the switching frequency

    Power Electronics Specialists Conference  2008 

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  • ゾーンコントロール誘導加熱装置の電流位相制御と過渡特性

    電気学会 半導体電力変換研究会  2008 

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  • 交流フィルタレス三相系統連系用電力変換回路

    平成20年電気学会全国大会  2008 

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  • 多直列接続したコンデンサの電圧均一化を目的とした共振形スイッチトキャパシタコンバータ

    電気学会 半導体電力変換研究会  2008 

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  • Current Rating Reduction of the RSCC Voltage-Balancing Circuit for a Diode-Clamped Five-Level Inverter

    Japan Industry Application Society Conference  2008 

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  • A Single-Phase Utility-Interface Circuit without any AC Inductor nor EMI Filter

    Industry Applications Society Annual Meeting  2008 

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  • Control and Performance of a Utility-Interface Converter without any AC Filter

    2007 

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  • A Practical Approach to Eliminating DC Magnetic Flux from the Series Transformer of a Dynamic Voltage Restorer

    The Fourth Power Conversion Conference  2007 

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  • A New Control Method of a Resonant Switched-Capacitor Converter and its Application to Balancing of the Split DC Voltages in a Multilevel Inverter

    The Fourth Power Conversion Conference  2007 

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  • Zone Controlled Induction Heating (ZCIH) - A New Concept in Induction Heating

    The Fourth Power Conversion Conference  2007 

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  • A Zero-Sequence Voltage Control for a Diode-Clamped Linear Amplifier

    2007 

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  • A Resonant Gate-drive Circuit for Fast and High Voltage Semiconductor Devices

    2007 

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  • A Fast Current Controller Based on Oversampling and its Application to a Single-Phase Active Filter

    2007 

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  • Phase Angle Control of Resonant Currents in a Zone Controlled Induction Heating System

    2007 

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  • 位相シフト制御法を適用した共振形スイッチトキャパシタコンバータの過渡特性の改善

    産業応用部門大会  2007 

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  • 交流フィルタレス系統連系用電力変換回路の動作特性

    電気学会 半導体電力変換研究会  2007 

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  • A Practical Approach to Eliminating DC Magnetic Flux from the Series Transformer of a Dynamic Voltage Restorer

    The Fourth Power Conversion Conference  2007 

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  • A New Control Method of a Resonant Switched-Capacitor Converter and its Application to Balancing of the Split DC Voltages in a Multilevel Inverter

    The Fourth Power Conversion Conference  2007 

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  • Zone Controlled Induction Heating (ZCIH) - A New Concept in Induction Heating

    The Fourth Power Conversion Conference  2007 

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  • ダイオードクランプ形線形増幅回路の零相電圧制御法

    電気学会 半導体電力変換研究会  2007 

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  • 高速・高耐圧スイッチングデバイス用共振ドライブ回路

    電気学会 半導体電力変換研究会  2007 

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  • オーバーサンプリングを用いた高速電流制御法と単相アクティブフィルタへの適用

    電気学会 半導体電力変換研究会  2007 

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  • ゾーンコントロール誘導加熱装置の電流位相制御特性

    電気学会 半導体電力変換研究会  2007 

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  • Dynamic Control and Performance of a Resonant Switched-Capacitor Converter Based on Phase-Shift Control

    Japan Industry Application Society Conference  2007 

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  • A New Control Method of a Resonant Switched-Capacitor Converter and the Application for Balancing of the Split DC Voltages in a Multilevel Inverter

    2006 

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  • 単相アクティブフィルタにおける負荷急変時の直流リンク電圧変動抑制法

    電気学会 半導体電力変換研究会  2006 

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  • Dynamic Behavior of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition: Experimental Verification by a 200-V, 20-kW Laboratory System

    Industry Applications Society Annual Meeting  2006 

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  • 高周波動作と低損失化を実現可能にするMOSFET用共振ゲートドライブ回路

    電気学会 半導体電力変換研究会  2006 

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  • 共振形スイッチトキャパシタコンバータの新制御法とマルチレベルインバータの直流電圧均一化回路への応用

    電気学会 半導体電力変換研究会  2006 

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  • Dynamic Behavior of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition: Experimental Verification by a 200-V, 20-kW Laboratory System

    Industry Applications Society Annual Meeting  2006 

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  • A Reduction Method of Transient DC-Voltage Fluctuations for a Single-Phase Active Filter

    2006 

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  • A Resonant Gate-drive Circuit for High Frequency and High Efficiency Converter

    2006 

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  • A high-efficiency diode-clamped linear amplifier

    International Power Electronics Conference  2005 

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  • Design and experimentation of a dynamic voltage restorer capable of significantly reducing an energy-storage element

    Industry Applications Society Annual Meeting  2005 

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  • A 6.6-kV transformerless STATCOM based on a five-level diode-clamped PWM converter: system design and experimentation of a 200-V, 10-kVA laboratory model

    Industry Applications Society Annual Meeting  2005 

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  • Dynamic Behaviors of a 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells under a Single-Line-to-Ground Fault Condition : Experimental Verifications by a 200-V, 20-kW Laboratory System

    2005 

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  • Control and Performance of a PWM Rectifier with an FPGA-Based Current Controller

    2005 

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  • A 6.6-kV Transformer-less STATCOM Based on a Five-Level Diode-Clamped Converter : Experiments of the Laboratory Model rated at 200V and 10kVA

    2005 

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  • Voltage regulation performance of a shunt active filter intended for installation on a power distribution system

    Power Electronics Specialist Conference 2005  2005 

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  • DVRの瞬低補償開始時に生じる直列変圧器の偏磁抑制

    電気学会 半導体電力変換研究会  2005 

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  • A high-efficiency diode-clamped linear amplifier

    International Power Electronics Conference  2005 

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  • Dynamic behaviors of a 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells under a single-line-to-ground fault condition

    The 2005 International Power Electronics Conference  2005 

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  • FPGAによる高速電流制御を適用したPWM整流器の動作特性

    電気学会 半導体電力変換研究会  2005 

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  • PDM制御法を適用した誘導加熱装置の動作特性と電源電流の波形改善

    電気学会 半導体電力変換研究会  2005 

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  • 5レベル変換器を用いた6.6kVトランスレスSTATCOM : 200V, 10kVAミニモデルによる実験的検討

    電気学会 半導体電力変換研究会  2005 

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  • 16段多重変換器を用いた自励式BTBシステムの一線地絡時における過渡特性 : 200V 20kWミニモデルを用いた実験的検討

    電気学会 半導体電力変換研究会  2005 

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  • Design and experimentation of a dynamic voltage restorer capable of significantly reducing an energy-storage element

    Industry Applications Society Annual Meeting  2005 

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  • A 6.6-kV transformerless STATCOM based on a five-level diode-clamped PWM converter: system design and experimentation of a 200-V, 10-kVA laboratory model

    Industry Applications Society Annual Meeting  2005 

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  • A Suppressing Method of Flux Deviation Occurring in Series Transformers When a DVR Starts Voltage-Sag Compensation

    2005 

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  • Dynamic behaviors of a 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells under a single-line-to-ground fault condition

    The 2005 International Power Electronics Conference  2005 

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  • Voltage regulation performance of a shunt active filter intended for installation on a power distribution system

    Power Electronics Specialist Conference 2005  2005 

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  • Performance of a Pulse-Density-Modulated Inverter for Induction Heating Applications

    2005 

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  • A 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells for power flow control: experimental verifications by a 200-V, 10-kW laboratory system

    Industry Applications Society Annual Meeting  2004 

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  • ゲート電荷による損失を低減可能なMOSFET用共振形ドライブ回路

    電気学会 半導体電力変換研究会  2004 

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  • A 21-level (line-to-line) BTB system based on series connection of sixteen converter-cells for power flow control: experimental verifications by a 200-V, 10-kW laboratory system

    Industry Applications Society Annual Meeting  2004 

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  • A Resonant Gate-Drive Circuit without Gate-Charge Losses for a Power MOSFET

    2004 

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  • Occurrence and suppression of DC-flux deviations in a doubly-fed flywheel generator system

    Industry Applications Society Annual Meeting  2003 

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  • Occurrence and suppression of DC-flux deviations in a doubly-fed flywheel generator system

    Industry Applications Society Annual Meeting  2003 

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  • Dynamic performance of a unified power flow controller for stabilizing AC transmission systems

    Power Electronics Specialists Conference, 2002  2002 

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  • Implementation and performance of cooperative control of shunt active filters for harmonic damping throughout a power distribution system

    Industry Applications Society Annual Meeting  2002 

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  • Performance of a self-commutated BTB system under a single-line-to-ground fault condition

    Power Conversion Conference, 2002  2002 

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  • Dynamic performance of a unified power flow controller for stabilizing AC transmission systems

    Power Electronics Specialists Conference, 2002  2002 

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  • Implementation and performance of cooperative control of shunt active filters for harmonic damping throughout a power distribution system

    Industry Applications Society Annual Meeting  2002 

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  • Performance of a self-commutated BTB system under a single-line-to-ground fault condition

    Power Conversion Conference, 2002  2002 

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  • Stability Improvement of a Series Active Filter Integrated with a Double-Series Diode Rectifier

    2000 

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  • 自励式 BTB (Back-To-Back) のシステム構成と制御法

    電気学会 半導体電力変換研究会  2000 

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  • Stability Improvement of a Series Active Filter Integrated with a Double-Series Diode Rectifier

    2000 

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  • 配電系統用アクティブフィルタの全ディジタル制御システム

    電気学会 半導体電力変換研究会  2000 

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  • A Circuit Configuration and Control Scheme of a BTB (back-to-back) System Based on Gate Commutation

    2000 

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  • System Configuration and Control Strategy of a Doubly-Fed Flywheel Generator-Motor : Load-Leveling of the next generation Magnetic Power Supply for a Proton Accelerator

    2000 

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  • A Fully-Digital-Controlled Active filter for Installation on Power Distribution Systems

    2000 

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  • アクティブフィルタを用いた電力系統高調波発生源探査法

    電気学会 半導体電力変換研究会  2000 

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  • 低温プラズマ発生装置用薄型MOSFETモジュールを用いた2MHz6kVA電圧形インバータ

    電気学会 半導体電力変換研究会  2000 

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  • 交流励磁フライホイール発電機システム : 陽子加速器用電磁石電源の電力変動抑制効果

    電気学会 半導体電力変換研究会  2000 

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  • A Zero-Current-Switching Based Three-Phase PWM Inverter Having Resonant Circuits on AC Side

    Industry Applications Society Annual Meeting  1993 

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  • Pulse Density Modulation Based Power Control of a 4 kW, 400 kHz Voltage-Source Inverter for Induction Heating Applications

    Power Conversion Conference  1993 

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  • A Zero-Current-Switching Based Three-Phase PWM Inverter Having Resonant Circuits on AC Side

    Industry Applications Society Annual Meeting  1993 

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  • Pulse Density Modulation Based Power Control of a 4 kW, 400 kHz Voltage-Source Inverter for Induction Heating Applications

    Power Conversion Conference  1993 

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  • Design Strategy for the Combined System of Shunt Passive and Series Active Filters

    Industry Applications Society Annual Meeting  1991 

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  • Design Strategy for the Combined System of Shunt Passive and Series Active Filters

    Industry Applications Society Annual Meeting  1991 

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  • A Practical Approach to Harmonic Compensation in Power Systems -Series Connection of Passive and Active Filters-

    Industry Applications Society Annual Meeting  1990 

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  • A Practical Approach to Harmonic Compensation in Power Systems -Series Connection of Passive and Active Filters-

    Industry Applications Society Annual Meeting  1990 

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Industrial property rights

  • ＤＣＤＣ変換回路、ならびにその制御装置および制御方法

    藤田英明, 伊藤 紘基, 千葉 雄斗

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    Applicant：国立大学法人東京工業大学, 株式会社小松製作所

    Application no：特願2020-135279  Date applied：2020.8

    Announcement no：特開2022-030941  Date announced：2022.2

    Patent/Registration no：特許第7487883号  Date registered：2024.5 

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  • 電力変換装置

    藤田英明, 伊藤 紘基, 千葉 雄斗

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    Applicant：国立大学法人東京工業大学, 株式会社小松製作所

    Application no：特願2020-135278  Date applied：2020.8

    Announcement no：特開2022-030940  Date announced：2022.2

    Patent/Registration no：特許第7487882号  Date registered：2024.5 

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  • モータ制御装置

    藤田英明

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    Applicant：国立大学法人東京工業大学

    Application no：特願2014-174326  Date applied：2014.8

    Announcement no：特開2016-052142  Date announced：2016.4

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  • アクティブフィルタ

    藤田英明, 秋山 邦裕, 岡田 宏, 豊田 晃久, 中嶋 康夫

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    Applicant：国立大学法人東京工業大学, 株式会社指月電機製作所

    Application no：特願2014-038025  Date applied：2014.2

    Announcement no：特開2015-163011  Date announced：2015.9

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  • 電力変換装置

    藤田英明, 安藤 浩次, 馬渕 雅夫, 溝上 恭生

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    Applicant：国立大学法人東京工業大学, オムロン株式会社

    Application no：特願2014-018146  Date applied：2014.2

    Announcement no：特開2015-146667  Date announced：2015.8

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  • 電力変換装置

    藤田英明, 安藤 浩次, 馬渕 雅夫, 溝上 恭生

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    Applicant：国立大学法人東京工業大学, オムロン株式会社

    Application no：特願2014-018145  Date applied：2014.2

    Announcement no：特開2015-146666  Date announced：2015.8

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  • アクティブフィルタ

    藤田英明, 秋山 邦裕, 中嶋 康夫, 豊田 晃久

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    Applicant：国立大学法人東京工業大学, 株式会社指月電機製作所

    Application no：特願2013-156809  Date applied：2013.7

    Announcement no：特開2015-027231  Date announced：2015.2

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  • 発電機用電力変換器

    藤田英明, 川畑 健太郎

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    Applicant：国立大学法人東京工業大学, デンヨー株式会社

    Application no：特願2013-098699  Date applied：2013.5

    Announcement no：特開2014-220917  Date announced：2014.11

    Patent/Registration no：特許第6143171号  Date registered：2017.5 

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  • インバータ装置および太陽光発電システム

    藤田英明, 馬淵 雅夫, 小林 健二, 溝上 恭生, 坪田 康弘, 船本 昭宏

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    Applicant：国立大学法人東京工業大学, オムロン株式会社

    Application no：特願2012-111802  Date applied：2012.5

    Announcement no：特開2013-240203  Date announced：2013.11

    Patent/Registration no：特許第5963531号  Date registered：2016.7 

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  • インバータ装置、インバータシステムおよび太陽光発電システム

    藤田英明, 小林 健二, 溝上 恭生, 坪田 康弘, 馬渕 雅夫, 石山 泰士

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    Applicant：国立大学法人東京工業大学, オムロン株式会社

    Application no：特願2012-035305  Date applied：2012.2

    Announcement no：特開2013-172562  Date announced：2013.9

    Patent/Registration no：特許第5950614号  Date registered：2016.6 

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  • ゲート駆動装置

    赤木泰文, 藤田英明, 岩田 恭彰, 漆畑 廣明, 冨永真志, 堀口 剛司, 中武 浩

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2011-170796  Date applied：2011.8

    Announcement no：特開2013-038843  Date announced：2013.2

    Patent/Registration no：特許第5701176号  Date registered：2015.2 

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  • 電力変換装置

    藤田英明, 菊池 公明, 平上 克之, 藤原 祐紀

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    Applicant：国立大学法人東京工業大学, 株式会社指月電機製作所

    Application no：特願2011-099468  Date applied：2011.4

    Announcement no：特開2012-231637  Date announced：2012.11

    Patent/Registration no：特許第5731891号  Date registered：2015.4 

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  • 電力変換器

    藤田英明, 赤木泰文, 萩原誠

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    Applicant：国立大学法人東京工業大学

    Application no：特願2010-186249  Date applied：2010.8

    Announcement no：特開2012-044839  Date announced：2012.3

    Patent/Registration no：特許第5721096号  Date registered：2015.4 

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  • 電力変換装置

    藤田英明

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    Applicant：国立大学法人東京工業大学, サンケン電気株式会社

    Application no：特願2009-268608  Date applied：2009.11

    Announcement no：特開2011-113269  Date announced：2011.6

    Patent/Registration no：特許第5713282号  Date registered：2015.3 

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  • 誘導加熱装置、その制御方法、及びプログラム

    [藤田英明,ファム ゴク ファー ,内田 直喜,岡崎 良弘,尾崎 一博]

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    Applicant：国立大学法人東京工業大学, 三井造船株式会社

    Application no：特願2009-095553  Date applied：2009.4

    Announcement no：特開2010-245002  Date announced：2010.10

    Patent/Registration no：特許第5388109号  Date registered：2013.10 

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  • パワーコンディショナおよび太陽光発電システム

    藤田英明, 馬淵 雅夫, 坪田 康弘, 溝上 恭生

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    Applicant：国立大学法人東京工業大学, オムロン株式会社

    Application no：特願2009-061916  Date applied：2009.3

    Announcement no：特開2010-220321  Date announced：2010.9

    Patent/Registration no：特許第4888817号  Date registered：2011.12 

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  • 電力変換装置、パワーコンディショナ、および発電システム

    藤田英明, 馬淵 雅夫, 坪田 康弘, 溝上 恭生

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    Applicant：国立大学法人東京工業大学, オムロン株式会社

    Application no：特願2009-061915  Date applied：2009.3

    Announcement no：特開2010-220320  Date announced：2010.9

    Patent/Registration no：特許第4911733号  Date registered：2012.1 

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  • MOSFETモデルのパラメータ抽出方法

    赤木泰文, 藤田英明, 地道 拓志, 漆畑 廣明, 冨永真志, 大井 健史, 木ノ内 伸一

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2009-055179  Date applied：2009.3

    Announcement no：特開2010-211387  Date announced：2010.9

    Patent/Registration no：特許第5069711号  Date registered：2012.8 

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  • 電力変換装置

    藤田英明, 赤木泰文, 地道 拓志, 岩田 明彦, 伊藤 寛

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2009-500089  Date applied：2008.2

    Announcement no：特開(再表)2008/102552  Date announced：2010.5

    Patent/Registration no：特許第4898899号  Date registered：2012.1 

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  • ３相電力変換装置

    藤田英明, 赤木泰文, 地道 拓志, 岩田 明彦, 伊藤 寛

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    Applicant：国立大学法人東京工業大学, 三菱電機株式会社

    Application no：特願2009-500088  Date applied：2008.2

    Announcement no：特開(再表)2008/102551  Date announced：2010.5

    Patent/Registration no：特許第4898898号  Date registered：2012.1 

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  • 電力用アクティブフィルタ

    藤田英明, 赤木泰文, 藤原 純也

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    Applicant：国立大学法人東京工業大学, 中国電力株式会社

    Application no：特願2005-032130  Date applied：2005.2

    Announcement no：特開2006-223023  Date announced：2006.8

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Awards

  • IEEJ Distinguished Paper Award

    2026.6   IEEJ  

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  • IEEE IAS IPCC Second Prize Paper Award

    2016.9   IEEE Industry Applications Society Industry Power Conversion Committee   A DC capacitor voltage control method for active power filters using modified reference including the voltage ripple derived from a theoretical analysis

    Tomoyuki Mannen, Hideaki Fujita

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    Award type：Award from international society, conference, symposium, etc. 

    This paper proposes a new dc capacitor voltage control method suitable for active power filters equipped with a small dc capacitor. The proposed control method calculates the theoretical dc capacitor voltage ripple and provides it to the dc capacitor voltage feedback controller as the reference. As a result, the proposed method has the capability to regulate the mean value of the dc capacitor voltage under a large voltage ripple condition. The proposed method also allows us to use a high feedback gain for suppressing the capacitor voltage fluctuations without any performance deterioration in the harmonic compensation. Experimental results confirm a good harmonic compensation and an effective voltage regulation performance under a small dc capacitor condition. The results also demonstrate a significant improvement in the capacitor voltage regulation even when a sudden load change occurs.

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  • 電気学会産業応用部門論文賞

    2010.8   電気学会 産業応用部門  

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    Award type：Honored in official journal of a scientific society, scientific journal  Country：Japan

    交流インダクタとEMIフィルタを必要としない単相系統連系用電力変換器の制御特性

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  • IPEC-Sapporo -ECCE Aia- Second Prize Paper Award

    2010.6   IEEJ Intrnational Power Electronics Conference   A Resonant Gate-Drive Circuit with Optically-Isolated Control Signal and Power Supply for Fast-Switching and High-Voltage Power Semiconductor Devices

    Hideaki Fujita, Masanori Ishigaki

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    Award type：Award from international society, conference, symposium, etc. 

    This paper deals with a resonant gate-drive circuit for fast and high-voltage power semiconductor devices, which is equipped with optical fibers for both gate control signal and dc power supply. A resonant inductor connected with the gate terminal makes it possible to charge or discharge the gate-to-source voltage by using the parallel resonance between the inductor and the input capacitance of the device. The optical fibers can be used to deliver the driving power to the gate drive circuit, because the circuit theoretically causes no power consumption for driving the power device. Moreover, the proposed circuit makes it possible to suppress fluctuations in the gate voltage caused by a rapid change in the drain-to-source voltage. Experimental results are shown to verify the viability of the proposed circuit.

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  • IEEE IAS Society Prize Paper Award

    2009.10   IEEE Industry Appricalcions Society  

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    Award type：Award from international society, conference, symposium, etc. 

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  • 電気学術振興賞・論文賞

    2008.5   電気学会   共振形スイッチトキャパシタコンバータの新制御法とマルチレベルインバータの直流電圧均一化回路への応用

    佐野憲一朗, 藤田英明

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    Award type：Honored in official journal of a scientific society, scientific journal  Country：Japan

    共振形スイッチトキャパシタコンバータの新制御法とマルチレベルインバータの直流電圧均一化回路への応用

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  • Isao Takahashi Power Electronics Award

    2005.4   The Institute of Electrical Engineers of Japan  

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    Award type：International academic award (Japan or overseas) 

    for Outstanding Achievement in Power Electronics

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  • IEEE IAS IPCC Second Prize Paper Award

    2003  

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    Award type：Award from international society, conference, symposium, etc. 

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  • IEEE IAS IPCC First Prize Paper Award

    1998  

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    Award type：Award from international society, conference, symposium, etc. 

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  • IEEE IAS IPCC First Prize Paper Award

    1995  

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    Award type：Award from international society, conference, symposium, etc. 

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  • 電気学会 発表論文賞

    1994   電気学会  

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  • 発表論文賞

    1994   電気学会  

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    Award type：Award from Japanese society, conference, symposium, etc.  Country：Japan

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  • IEEE IAS IPCC First Prize Paper Award

    1990   A Practical Approach to Harmonic Compensation in Power Systems -Series Connection of Passive and Active Filters-

    Hideaki Fujita, Hirofumi Akagi

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    Award type：Award from international society, conference, symposium, etc. 

    A combined system consisting of a passive filter and a small-rated active filter that are connected in series is discussed as a method of overcoming power system harmonic interferences caused by harmonic-producing loads such as diode or thyristor converters and cycloconverters. The system features filtering characteristics independent of the source impedance, parallel and series resonance between the source and the passive filter that is dumped by the active filter, and a required rating of the active filter which is much smaller than that of a conventional active filter. Experimental results obtained from a prototype model are shown to verify the developed theory.

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Research Projects

  • ＳＩＰ（戦略的イノベーション創造プログラム）／次世代パワーエレクトロニクス／次世代パワーモジュールの応用に関する基盤研究開発／次世代パワーモジュールを使用したパワーエレクトロニクス機器とその統合システ

    2018

    Sponsored Research Program (Governmental)  戦略的イノベーション創造プログラム（SIP）

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  • エジプト日本科学技術大学プロジェクト フェーズ２ エネルギー資源工学・環境工学専攻支援

    2018

    Sponsored Research Program  エジプト日本科学技術大学(E-JUST)プロジェクト

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  • ＳＩＰ（戦略的イノベーション創造プログラム）／次世代パワーエレクトロニクス／次世代パワーモジュールの応用に関する基盤研究開発／次世代パワーモジュールを使用したパワーエレクトロニクス機器とその統合システムの包括的研究開発

    2017 - 2018

    Sponsored Research Program (Governmental)  戦略的イノベーション創造プログラム（SIP）

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  • 外国人受託研修員(Mr.KIM Bunthern)の受入

    2014

    Sponsored Research Program  JICA外国人受託研修員

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  • 外国人受託研修員(Mr.SENG Silong)の受入

    2014

    Sponsored Research Program  JICA外国人受託研修員

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  • 外国人受託研修員(Mr.LENG Sovannarith)の受入

    2012

    Sponsored Research Program  JICA外国人受託研修員

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  • 外国人受託研修員(Mr.SOEUN Somuny Outdom)の受入

    2012

    Sponsored Research Program  JICA外国人受託研修員

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  • 高耐圧スイッチングデバイス用完全光絶縁駆動回路

    Grant number：7700004980  2006

    Sponsored Research Program (Governmental)  地域イノベーション創出総合支援事業（シーズ発掘試験）

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