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

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2018/06/01

タイトル(英語): A Three-Phase Grid-Connected Inverter Equipped With a Shunt Instantaneous Reactive Power Compensator

著者名: 高木　一斗（東京工業大学 大学院理工学研究科 電気電子工学専攻），藤田　英明（東京工業大学 大学院理工学研究科 電気電子工学専攻）

著者名(英語): Kazuto Takagi (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology), Hideaki Fujita (Department of Electrical and Electronic Engineering, Tokyo Institute of Technology)

キーワード: 交流インダクタ，系統連系インバータ，瞬時無効電力，PVインバータ，スイッチング損失　　ac inductor，grid-connected inverter，instantaneous reactive power，pv inverter，switching loss

要約(英語): This paper introduces a new three-phase grid-connected inverter for commercial-scale 10-50-kW photovoltaic systems installed on underutilized assets such as rooftops of office buildings. The circuit topology combines an inductorless active bridge with a parallel-connected PWM inverter behaving as an instantaneous reactive power compensator. The active bridge, referred to as 120°-conduction inverter, performs a fundamental-frequency switching and outputs a 120°-block-shaped current, while the instantaneous reactive power compensator suppresses the harmonic current included in the block-shaped current. The main advantage of this strategy is the size reduction of the required ac inductor by a factor of four as well as the reduction in switching device power losses. The theoretical analysis clearly shows that the compensator controls only instantaneous reactive power to synthesize a sinusoidal current, thus eliminating the need for an electrolytic capacitor. A 5-kW experimental setup validates the operating principle and control method of the proposed inverter, and exhibits an inverter efficiency as high as 98.8%.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.138 No.6 （2018）

本誌掲載ページ: 530-537 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/138/6/138_530/_article/-char/ja/