"Wiroj Tangtheerajaroonwong,Keiji Wada,Hirofumi Akagi","Design and Performance of a Transformerless Shunt Hybrid Filter Integrated Into a Three-Phase Diode Rectifier",,"IEEE Transactions on Power Electroncis",,"Vol. 22","No. 5","pp. 1882-1889",2007,Sept.
"Makoto Hagiwara,Keiji Wada,Hideaki Fujita,Hirofumi Akagi","Dynamic Behavior of a 21-Level BTB-Based Power-Flow Controller Under Single-Line-to-Ground Fault Conditions",,"IEEE Transaction on Industry Applications","IEEE","Vol. 43","No. 5","pp. 1379-1387",2007,Sept.
"和田圭二,石塚哲也,清水敏久","ACモジュール方式系統連系インバータシステムの伝導ノイズとその抑制法",,"電気学会論文誌D分冊",,"Vol. 125","No. 10","pp. 911-918",2005,Oct.
"萩原　誠,和田圭二,藤田英明,赤木泰文","線間21レベル電力変換器を用いた自励式BTBシステム?200V 20kWミニモデルによる実験的検討?",,"電気学会論文誌D分冊",,"Vol. 125","No. 3","pp. 397-404",2005,Apr.
"萩原 誠,和田 圭二,藤田 英明,赤木 泰文","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","電気学会 半導体電力変換研究会資料",,,"No. SPC-05-21","pp. 1-6",2005,Jan.
"井上 重徳,和田圭二,清水 敏久","中性線用アクティブフィルタの制御法と補償特性",,"電気学会論文誌D分冊",,"Vol. 124","No. 10","pp. 1001-1009",2004,
"和田圭二,井上重徳,清水敏久","三相4線式低圧配電系統の電圧ひずみと3次高調波電圧抑制法",,"電気学会論文誌D分冊",,"Vol. 123","No. 8","pp. 942-948",2003,
"和田圭二,八木聰,清水敏久,高木宏之,伊藤美知夫","π-LC形イミタンス変換回路を用いたACモジュール用インバータ",,"電気学会論文誌D分冊",,"Vol. 123","No. 7","pp. 842-847",2003,
"Keiji Wada","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に関する研究",,,,,,,2000,