"Hirofumi Akagi,Makoto Hagiwara,Kazutoshi Nishimura","The Technical Possibilities of a Modular Multilevel PWM Inverter: A New Medium-Voltage Motor Drive for Energy Savings","The 8th International Conference on Power Electronics and Drive Systems",,,,,,2009,Nov.
"Makoto Hagiwara,Kazutoshi Nishimura,Hirofumi Akagi","A Modular Multilevel PWM Inverter for Medium-Voltage Motor Drives","IEEE Energy Conversion Congress and Exposition",,,,,"pp. 2557-2564",2009,Sept.
"Makoto Hagiwara,Hirofumi Akagi","Control and Experiment of Pulsewidth-Modulated Modular Multilevel Converters",,"IEEE Transactions on Power Electronics","IEEE","Vol. 24","No. 7","pp. 1737-1746",2009,July
"Kazutoshi Nishimura,Makoto Hagiwara,Hirofumi Akagi","モジュラー・マルチレベル変換器（MMC）の直流コンデンサ電圧解析","平成21年電気学会全国大会",,,,"  4-007",,2009,Mar.
"Kazutoshi Nishimura,Makoto Hagiwara,Hirofumi Akagi","モジュラー・マルチレベル変換器（MMC）の高圧モータドライブシステムへの応用?400 V，15 kW ミニモデルによる実験的検証?","電気学会研究会資料. SPC, 半導体電力変換研究会",,,,,"  SPC-09-024",2009,Jan.