萩原 誠 (ハギワラ マコト)

単相フルブリッジ変換器を適用した 交流架線式蓄電池電車の蓄電池電流交流成分抑制法
鈴木温也,ゴー チョン ニャン,萩原 誠,田口義晃
電気学会論文誌. D, 産業応用部門誌 Vol. 145(No. 9) 2025年09月

直列接続されたパワー半導体素子のゲート磁気結合駆動におけるDG間コンデンサの効果
浦壁隆浩,石井一輝,萩原誠,檜垣優介,糸川祐樹
電気学会論文誌. D, 産業応用部門誌 Vol. 145(No. 4) 2025年04月

AC Component-Based Control and Phase Shift Applications on Bidirectional Chopper With Auxiliary Full-Bridge Converter
Ghiffari Aby Malik Nasution,Makoto Hagiwara
IEEE Transactions on Power Electronics Vol. 40(No. 4) 2025年04月

直列接続されたパワー半導体素子のゲート磁気結合駆動におけるゲート電圧振動の抑制法
浦壁隆浩,神田大毅,萩原誠,檜垣優介,糸川祐樹
電気学会論文誌. D, 産業応用部門誌 Vol. 145(No. 3) 2025年03月

Negative-Sequence Reactive Power Control and Active Power Control for DC/3ϕ Power Conversion Using Single-Delta Bridge-Cell (SDBC) Converter
Atsuya Suzuki,Makoto Hagiwara,Yu-Chen Su
IEEE Access Vol. 13 2025年

Operating Principles of Isolated Cascaded-Choppers DC-DC Converter Based on Variable Duty Ratios
Tian Luo,Makoto Hagiwara,Yu-Chen Su,Edoardo Ferri,Luigi Piegari
IEEE Transactions on Industry Applications Vol. 60(Issue 6) 2024年11月

Bidirectional Chopper with Single-Cell Auxiliary Full-Bridge Converter for Onboard Battery Energy Storage System
Ghiffari Aby,Malik Nasution,Masaki Matsumoto,Makoto Hagiwara
IEEE Transactions on Power Electronics Vol. 39(Issue 8) 2024年08月

An Isolated DC-DC Converter with Multiple Cascaded Choppers Featuring RMS Current Reduction toward Resilient Power Grids
Luo Tian,Yu-chen Su,Makoto Hagiwara
IEEE Transactions on Industry Applications Vol. 60(Issue 2) 2024年03月

Low-Voltage Ride-Through Operation of the SDBC based STATCOM integrated with one Single-Phase Converter through Medium-Frequency Transformer
Yu-chen Su,Makoto Hagiwara
IEEE Transactions on Industry Applications Vol. 60(Issue 2) 2024年03月

Automated Flexible Modeling for Various Full-SiC Power Modules
Junichi Nakashima,Takeshi Horiguchi,Yasushige Mukunoki,Makoto Hagiwara,Takahiro Urakabe,Shigeki Harada
IEEE Transactions on Power Electronics Vol. 38(Issue 5) 2023年05月

Evaluation and Performance of Three-phase Inverter Using Multiple Bidirectional Choppers Intended for 1.5-kVdc PV Systems
Qiao Linyue,Makoto Hagiwara
IEEE Access Vol. 11 2023年04月

Reconfigurable Large Current and High Voltage Test Bench for HVDC Circuit Breaker Verification
Nikola Krneta,Makoto Hagiwara
IEEE Transactions on Power Electronics Vol. 38(Issue 1) 2023年01月

Current Control of Three-phase Inverter Using Multiple Bidirectional Choppers Intended for 1.5-kV PV Systems
Qiao Linyue,Yoshifumi Shimizu,Makoto Hagiwara
IEEE Transactions on Industry Applications Vol. 59(No. 1) 2023年01月

Operation of a Dc/3ϕ power converter using a single‐delta bridge‐cell converter under low magnetizing inductance
Kento Okumura,Makoto Hagiwara
Electrical Engineering in Japan Vol. 215(Issue 3) 2022年09月 AbstractA single‐delta bridge‐cell converter (hereinafter referred ...

Dual Circuit Based Test Bench Design for HVDC Circuit Breaker Verification
Nikola Krneta,Makoto Hagiwara
IEEE Transactions on Power Electronics Vol. 37(Issue 9) 10658-10671 2022年09月

Design and Analysis of a Novel HVDC Circuit Breaker Test Bench Based on an H-Bridge Cell MMCC
Nikola Krneta,Makoto Hagiwara
IEEE Access Vol. 10 2022年07月

Investigation of Full SiC Power Modules for More Electric Aircraft with Focus on FIT Rate and High Frequency Switching
Junichi Nakashima,Takeshi Horiguchi,Yasushige Mukunoki,Kenji Hatori,Ryo Tsuda,Hitoshi Uemura,Makoto Hagiwara,Takahiro Urakabe
IEEE Transactions on Industry Applications Vol. 58(No. 3) 2978-2986 2022年05月

A Compact High-Power Noninverting Bidirectional Buck–Boost Chopper for Onboard Battery Energy Storage Systems
Hamzeh Jamal,Ahmad Jaber,Hagiwara Makoto
IEEE Transactions on Power Electronics Vol. 37(No. 2) 2022年02月

Single-Delta Bridge-Cell Converter With Single Single-Phase Medium-Frequency Transformer Capable of Active Power Control
M. Hagiwara,Y. Chuman,Y. Kudo
IEEE Transactions on Power Electronics Vol. 36(No. 11) 12515-12527 2021年11月

3レベルフライングキャパシタ変換器をベースとした双方向非絶縁形DC-DC変換器の効率・電力密度評価
手﨑和明,萩原誠
電気学会論文誌. D, 産業応用部門誌 Vol. 141(No. 9) 2021年09月

Control and Experimental Verification of a Bidirectional Nonisolated DC–DC Converter Based on Switched-Capacitor Converters
Kazuaki Tesaki,Makoto Hagiwara
IEEE Transactions on Power Electronics Vol. 36(No. 6) 6501-6512 2021年06月

Interleaved Bidirectional Chopper With Auxiliary Converters for DC Electric Railways
Hamzeh Jamal,Ahmad Jaber,Makoto Hagiwara
IEEE Transactions on Power Electronics Vol. 36(No. 5) 5336-5347 2021年05月

Control and Experimental Verification of a Bidirectional Non-isolated DC-DC Converter Based on Three-level Flying-Capacitor Converters
Kazuaki Tesaki,Yuuji Isida,Makoto Hagiwara
IEEJ Journal of Industry Applications Vol. 10(No. 1) 2021年01月

3レベルフライングキャパシタ変換器をベースとした双方向非絶縁形DC-DCコンバータの制御法と実験検証
手﨑和明,石田侑次,萩原誠
電気学会産業応用部門誌 Vol. 140(No. 6) 2020年06月

単一デルタブリッジセル（SDBC）変換器と単相高周波変圧器を結合した直流/単相/三相変換器の動作検証
工藤悠生,萩原誠
電気学会論文誌. D, 産業応用部門誌 Vol. 139(No. 12) 2019年12月

Operation of a transformerless three-phase PV inverter using multiple bidirectional choppers
Ryo Yamada,Makoto Hagiwara
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) Vol. 209(Issue 1-2) 2019年09月

複数の双方向チョッパを使用したトランスレス三相PVインバータの動作検証
山田遼,萩原誠
電気学会論文誌. D, 産業応用部門誌 Vol. 139(No. 8) 2019年08月

Control and experiment of a bidirectional chopper with an auxiliary converter
Ohnishi Haruna,Makoto Hagiwara
Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi) Vol. 102(Issue 2) 2019年02月

An Improved Compact Model for a Silicon-Carbide MOSFET and Its Application to Accurate Circuit Simulation
Y. Mukunoki,K. Konno,T. Horiguchi,A. Nishizawa,M. Kuzumoto,M. Hagiwara,H. Akagi
IEEE Transactions on Power Electronics Vol. 33(No. 11) 2018年11月

eラーニングを活用した工学系専門科目の理解度向上 -東京工業大学電気電子系-
千葉 明,安岡 康一,中川 茂樹,赤塚 洋,西方 敦博,萩原 誠,渡辺 正裕,竹内 希,全 俊豪,時岡 えい
工学教育 Vol. 66(No. 5) 2018年10月

補助変換器を有する双方向チョッパの制御法と動作検証
大西晴菜,萩原誠
電気学会産業応用部門誌 Vol. 138(No. 7) 2018年07月

An Induction-Motor Control Method for Minimization of Capacitor-Voltage Fluctuations in a Modular Multilevel DSCC Inverter: Its Applications to a Quadratic-Torque Load
Yuhei Okazaki,Hitoshi Matsui,M. Moses Muhoro,Makoto Hagiwara,Hirofumi Akagi
ELECTRICAL ENGINEERING IN JAPAN 201(4) 34-44 2017年12月 [査読有り]

AC-Inductors Design for a Modular Multilevel TSBC Converter, and Performance of a Low-Speed High-Torque Motor Drive Using the Converter
Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi,Masahiko Tsukakoshi,Ritaka Nakamura,Sumiyasu Kodama
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 53(5) 4718-4729 2017年09月 [査読有り]

A Hybrid DC Circuit Breaker Combining a Multilevel Converter and Mechanical Contactors: Verification of the Principles of Operation by Experiment and Simulation
Masayuki Oishi,Atsushi Suzuki,Makoto Hagiwara,Hirofumi Akagi
ELECTRICAL ENGINEERING IN JAPAN 200(3) 13-22 2017年08月 [査読有り]

Experimental Verification of an Electrical Drive Fed by a Modular Multilevel TSBC Converter When the Motor Frequency Gets Closer or Equal to the Supply Frequency
Wataru Kawamura,Yuto Chiba,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 53(3) 2297-2306 2017年05月 [査読有り]

Experimental Comparisons Between Modular Multilevel DSCC Inverters and TSBC Converters for Medium-Voltage Motor Drives
Yuhei Okazaki,Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi,Takashi Ishida,Masahiko Tsukakoshi,Ritaka Nakamura
IEEE TRANSACTIONS ON POWER ELECTRONICS 32(3) 1805-1817 2017年03月 [査読有り]

A Low-Speed, High-Torque Motor Drive Using a Modular Multilevel Cascade Converter Based on Triple-Star Bridge Cells (MMCC-TSBC)
Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi
ELECTRICAL ENGINEERING IN JAPAN 198(4) 73-82 2017年03月 [査読有り]

Capacitor-Voltage Balancing for a Modular Multilevel DSCC Inverter Driving a Medium-Voltage Synchronous Motor
Yuhei Okazaki,Hitoshi Matsui,Mbugua Moses Muhoro,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 52(5) 4074-4083 2016年09月 [査読有り]

マルチレベル変換器と機械接点を併用したハイブリッド直流遮断器：実験とシミュレーションによる動作原理検証
大石将幸,鈴木敦詞,萩原誠,赤木泰文
電気学会産業応用部門誌 Vol. 136(No. 8) 2016年08月

A Medium-Voltage Large Wind Turbine Generation System Using an AC/AC Modular Multilevel Cascade Converter
Nuntawat Thitichaiworakorn,Makoto Hagiwara,Hirofumi Akagi
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS 4(2) 534-546 2016年06月 [査読有り]

Theory and Experiment on an Optimal Carrier Frequency of a Modular Multilevel Cascade Converter With Phase-Shifted PWM
Firman Sasongko,Kei Sekiguchi,Kota Oguma,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON POWER ELECTRONICS 31(5) 3456-3471 2016年05月 [査読有り]

Zero-Voltage Ride-Through Capability of a Transformerless Back-To-Back System Using Modular Multilevel Cascade Converters for Power Distribution Systems
Pracha Khamphakdi,Masahiro Nitta,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON POWER ELECTRONICS 31(4) 2730-2741 2016年04月 [査読有り]

モジュラー・マルチレベルDSCCインバータのコンデンサ電圧変化幅を最小化する誘導電動機の制御法：二乗低減トルク負荷への応用
岡崎 佑平,松井 仁志,Muhoro M. Moses,萩原 誠,赤木 泰文
電気学会論文誌Ｄ（産業応用部門誌） 136(5) 336-345 2016年 This paper aims at minimizing capacitor-voltage fluctuations inherent in a modular multilevel cascad...

Power Flow Analysis and DC-Capacitor Voltage Regulation for the MMCC-DSCC
Hideaki Fujita,Makoto Hagiwara,Hirofumi Akagi
ELECTRICAL ENGINEERING IN JAPAN 193(1) 1-9 2015年10月 [査読有り]

A Low-Speed, High-Torque Motor Drive Using a Modular Multilevel Cascade Converter Based on Triple-Star Bridge Cells (MMCC-TSBC)
Wataru Kawamura,Kuan-Liang Chen,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 51(5) 3965-3974 2015年09月 [査読有り]

スター結線を有するモジュラー・マルチレベル・カスケード変換器（MMCC-xSBC）のパワーフロー解析とコンデンサ電圧制御
川村 弥,萩原 誠,赤木 泰文
電気学会論文誌Ｄ（産業応用部門誌） 135(7) 775-786 2015年07月 [査読有り]

A Transformerless Back-To-Back (BTB) System Using Modular Multilevel Cascade Converters For Power Distribution Systems
Pracha Khamphakdi,Kei Sekiguchi,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON POWER ELECTRONICS 30(4) 1866-1875 2015年04月 [査読有り]

TSBC方式モジュラー・マルチレベル・カスケード変換器(MMCC-TSBC)を用いた低速高トルクモータドライブ
川村弥,萩原誠,赤木泰文
電気学会産業応用部門誌 Vol. 135(No. 2) 2015年02月

A low-speed, high-torque motor drive using a modular multilevel cascade converter based on triple-star bridge cells (mmcc-tsbc)
Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi
IEEJ Transactions on Industry Applications 135(2) 162-169 2015年02月 [査読有り]

モジュラー・マルチレベル・カスケード変換器を用いたFTF（Front-To-Front）システムの実験検証
小熊 功太,フィルマン ・ サソンコ,萩原 誠,赤木 泰文
電気学会論文誌Ｄ（産業応用部門誌） 135(7) 794-801 2015年 This paper presents an experimental discussion on modular multilevel cascade converters based on dou...

Low-voltage-ride-through capability of an HVDC transmission system using two modular multilevel cascade converters (MMCC-DSCC)
Kota Oguma,Firman Sasongko,Makoto Hagiwara,Hirofumi Akagi
2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC) 1-6 2015年 [査読有り]

Enhancement on Capacitor-Voltage-Balancing Capability of a Modular Multilevel Cascade Inverter for Medium-Voltage Synchronous-Motor Drives
Yuhei Okazaki,Hitoshi Matsui,Mbugua Moses Muhoro,Makoto Hagiwara,Hirofumi Akagi
2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 6352-6359 2015年 [査読有り]

Multiple medium-voltage motor drives using modular multilevel cascade converters with medium-frequency transformers
Yuhei Okazaki,Makoto Hagiwara,Hirofumi Akagi
2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC) 1-6 2015年 [査読有り]

Design and evaluation of AC inductors indispensable to a modular multilevel cascade converter (MMCC-TSBC) for medium-voltage motor drives
Wataru Kawamura,Hirofumi Akagi,Makoto Hagiwara
2015 IEEE 2nd International Future Energy Electronics Conference (IFEEC) 1-6 2015年 [査読有り]

Which is More Suitable for MMCC-Based Medium-Voltage Motor Drives, a DSCC Inverter or a TSBC Converter?
Yuhei Okazaki,Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi,Takashi Ishida,Masahiko Tsukakoshi,Ritaka Nakamura
2015 9TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE-ECCE ASIA) 1053-1060 2015年 [査読有り]

Experimental verification of TSBC-based electrical drives when the motor frequency is passing through, or equal to, the supply frequency
Wataru Kawamura,Yuto Chiba,Makoto Hagiwara,Hirofumi Akagi
2015 IEEE Energy Conversion Congress and Exposition (ECCE) 5490-5497 2015年 [査読有り]

位相シフトPWMを適用したモジュラー・マルチレベル・カスケード変換器（MMCC-DSCC）の三角波キャリア周波数の検討
関口慧,新田将大,萩原誠,赤木泰文
電気学会産業応用部門誌 Vol. 134(No. 10) 2014年10月

Control and Experiment of a Modular Multilevel Cascade Converter Based on Triple-Star Bridge Cells
Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50(5) 3536-3548 2014年09月 [査読有り]

A Speed-Sensorless Start-Up Method of an Induction Motor Driven by a Modular Multilevel Cascade Inverter (MMCI-DSCC)
Yuhei Okazaki,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50(4) 2671-2680 2014年07月 [査読有り]

A Grid-Level High-Power BTB (Back-To-Back) System Using Modular Multilevel Cascade Converters Without Common DC-Link Capacitor
Kei Sekiguchi,Pracha Khamphakdi,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50(4) 2648-2659 2014年07月 [査読有り]

Experiment and Simulation of a Modular Push-Pull PWM Converter for a Battery Energy Storage System
Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50(2) 1131-1140 2014年03月 [査読有り]

Research trends of modular multilevel cascade inverter (MMCI-DSCC)-based medium-voltage motor drives in a low-speed range
Makoto Hagiwara,Hitoshi Matsui,Hirofumi Akagi,Yuhei Okazaki
2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA) 1586-1593 2014年 [査読有り]

Experimental Verification of a Modular Multilevel Cascade Inverter Based on Double-Star Bridge Cells
Nuntawat Thitichaiworakorn,Makoto Hagiwara,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 50(1) 509-519 2014年01月 [査読有り]

Control and experiment of a 380-V, 15-kW motor drive using modular multilevel cascade converter based on triple-star bridge cells (MMCC-TSBC)
Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi
2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA) 3742-3749 2014年 [査読有り]

A Low-Speed, High-Torque Motor Drive Using the Modular Multilevel Cascade Converter Based on Triple-Star Bridge Cells (MMCC-TSBC)
Wataru Kawamura,Kuan-Liang Chen,Makoto Hagiwara,Hirofumi Akagi
2014 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1631-1638 2014年 [査読有り]

Control and experiment of a modular push-pull PWM converter for a battery energy storage system
Hirofumi Akagi,Makoto Hagiwara
2014 International Power Electronics Conference (IPEC-Hiroshima 2014 - ECCE ASIA) 2323-2329 2014年 [査読有り]

Design considerations on the DC capacitor of each chopper cell in a modular multilevel cascade inverters (MMCI-DSCC) for medium-voltage motor drives
Yuhei Okazaki,Hitoshi Matsui,Makoto Hagiwara,Hirofumi Akagi
2014 IEEE Energy Conversion Congress and Exposition (ECCE) 3393-3400 2014年 [査読有り]

Start-Up and Low-Speed Operation of an Electric Motor Driven by a Modular Multilevel Cascade Inverter
Makoto Hagiwara,Isamu Hasegawa,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 49(4) 1556-1565 2013年07月 [査読有り]

Application of a modular multilevel cascade converter (MMCC‐SDBC) to a STATCOM. Control of active power and negative‐sequence reactive power
Makoto Hagiwara,Ryo Maeda,Hirofumi Akagi
Electrical Engineering in Japan 183(4) 33-44 2013年06月 [査読有り]

モジュラー・マルチレベル・カスケード変換器（MMCC-DSCC）を用いたBTBシステム：実験とシミュレーションによる動作検証
関口 慧,カムプラツグデー ・ プラシヤー,萩原 誠,赤木 泰文
電気学会論文誌Ｄ（産業応用部門誌） 133(11) 1089-1096 2013年 This paper presents a detailed discussion on the modular multilevel cascade converter based on doubl...

モジュラー・マルチレベル・カスケード・インバータ(MMCI-DSCC)を用いた誘導電動機の速度センサレス始動法
岡崎佑平,萩原誠,赤木泰文
電気学会産業応用部門誌 133(12) 1157-1164 2013年 [査読有り]

電池電力貯蔵システムに適したモジュラー・プッシュプル PWM変換器(MPC)の制御法と動作検証
萩原誠,赤木泰文
電気学会産業応用部門誌 133(10) 1031-1039 2013年 [査読有り]

Modeling and analysis of switching-ripple voltage on the DC link between a diode rectifier and a modular multilevel cascade inverter (MMCI)
Hui Peng,Makoto Hagiwara,Hirofumi Akagi
IEEE Transactions on Power Electronics 28(1) 75-84 2013年 [査読有り]

Design and experiment of a back-to-back (BTB) system using modular multilevel cascade converters for power distribution systems
Pracha Khamphakdi,Hirofumi Akagi,Kei Sekiguchi,Makoto Hagiwara
2013 IEEE ECCE Asia Downunder 311-317 2013年 [査読有り]

A Speed-Sensorless Startup Method of an Induction Motor Driven by a Modular Multilevel Cascade Inverter (MMCI-DSCC)
Yuhei Okazaki,Makoto Hagiwara,Hirofumi Akagi
2013 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 1473-1480 2013年 [査読有り]

A single-phase to three-phase direct AC/AC modular multilevel cascade converter based on double-star bridge-cells (MMCC-DSBC)
Nuntawat Thitichaiworakorn,Makoto Hagiwara,Hirofumi Akagi
2013 1st International Future Energy Electronics Conference (IFEEC) 476-481 2013年 [査読有り]

Experimental verification of a modular multilevel cascade converter based on triple-star bridge-cells (MMCC-TSBC) for motor drives
Makoto Hagiwara,Wataru Kawamura,Hirofumi Akagi
2013 1st International Future Energy Electronics Conference (IFEEC) 454-459 2013年 [査読有り]

A speed-sensorless startup of an induction motor driven by a modular multilevel cascade inverter (MMCI-DSCC)-Applications to quadratic-torque loads like fans, blowers, and compressors
Hirofumi Akagi,Makoto Hagiwara,Yuhei Okazaki
2013 1st International Future Energy Electronics Conference (IFEEC) 471-475 2013年 [査読有り]

A broad range of frequency control for the modular multilevel cascade converter based on triple-star bridge-cells (MMCC-TSBC)
Wataru Kawamura,Makoto Hagiwara,Hirofumi Akagi
2013 IEEE Energy Conversion Congress and Exposition 4014-4021 2013年 [査読有り]

A front-to-front (FTF) system consisting of two modular multilevel cascade converters based on double-star chopper-cells
Hirofumi Akagi,Makoto Hagiwara,Firman Sasongko
2013 1st International Future Energy Electronics Conference (IFEEC) 197(1) 488-493 2013年 [査読有り]

Negative-Sequence Reactive-Power Control by a PWM STATCOM Based on a Modular Multilevel Cascade Converter (MMCC-SDBC)
Makoto Hagiwara,Ryo Maeda,Hirofumi Akagi
IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 48(2) 720-729 2012年03月 [査読有り]

Startup and low-speed operation of an adjustable-speed motor driven by a modular multilevel cascade inverter (MMCI)
Hirofumi Akagi,Isamu Hasegawa,Makoto Hagiwara
2012 IEEE Energy Conversion Congress and Exposition (ECCE) 718-725 2012年 [査読有り]

Experimental verification of a modular multilevel cascade inverter based on double-star bridge-cells (MMCI-DSBC)
Nuntawat Thitichaiworakorn,Makoto Hagiwara,Hirofumi Akagi
2012 IEEE Energy Conversion Congress and Exposition (ECCE) 4196-4202 2012年 [査読有り]

Control and Analysis of the Modular Multilevel Cascade Converter Based on Double-Star Chopper-Cells (MMCC-DSCC)
Makoto Hagiwara,Ryo Maeda,Hirofumi Akagi
IEEE TRANSACTIONS ON POWER ELECTRONICS 26(6) 1649-1658 2011年06月 [査読有り]

Negative-Sequence Reactive-Power Control by a PWM STATCOM Based on a Modular Multilevel Cascade Converter (MMCC-SDBC)
Makoto Hagiwara,Ryo Maeda,Hirofumi Akagi
2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) 3728-3735 2011年 [査読有り]

Elucidation of DC Magnetic Deviation in Converter Transformers Used for a Self-Commutated BTB System during Single-Line-to-Ground Faults
Makoto Hagiwara,Phuong Viet Pham,Hirofumi Akagi
ELECTRICAL ENGINEERING IN JAPAN 168(2) 48-59 2009年07月 [査読有り]

A modular multilevel PWM inverter for medium-voltage motor drives
Makoto Hagiwara,Hirofumi Akagi,Kazutoshi Nishimura
2009 IEEE Energy Conversion Congress and Exposition 2811-2818 2009年 [査読有り]

PWM Control and Experiment of Modular Multilevel Converters
Makoto Hagiwara,Hirofumi Akagi
2008 IEEE POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-10 154-161 2008年 [査読有り]

Effects of phase-locked-loop circuit on a self-commutated BTB system under line faults
Hirofumi Akagi,Phuong Viet Pham,Makoto Hagiwara
2008 IEEE Power Electronics Specialists Conference 1708-1714 2008年 [査読有り]

自励式BTB(Back-To-Back)の制御法とシステム構成に関する研究
Makoto Hagiwara
2006年03月

Magnetic saturation in transformers used for a self-commutated BTB system with ride-through capability during voltage sags
Makoto Hagiwara,Hirofiimi Akagi,Phuong Viet Pham
2006 37th IEEE Power Electronics Specialists Conference 16-+ 2006年 [査読有り]

A 21-Level (Line-to-Line) BTB System Based on Series Connection of Sixteen Converter-Cells for Power Flow Control
萩原 誠
Proceedings of IEEE IAS Annual Meeting 3 1432-1438 2004年 [査読有り]