Simple and Effective Time Delay Compensation Method for Active Damping Control of Grid-Connected Inverter with an LCL Filter

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門（英文）

発行日: 2018/11/01

タイトル(英語): Simple and Effective Time Delay Compensation Method for Active Damping Control of Grid-Connected Inverter with an LCL Filter

著者名: Masaki Semasa (Department of Electrical Engineering, Doshisha University), Toshiji Kato (Department of Electrical Engineering, Doshisha University), Kaoru Inoue (Department of Electrical Engineering, Doshisha University)

著者名(英語): Masaki Semasa (Department of Electrical Engineering, Doshisha University), Toshiji Kato (Department of Electrical Engineering, Doshisha University), Kaoru Inoue (Department of Electrical Engineering, Doshisha University)

キーワード: Grid-Connected inverter，control time delay compensation，active damping，digital control，z-transform，sinusoidal compensator

要約(英語): A grid-connected inverter is equipped with an LCL filter at its output. This filter has a resonant characteristic and many active damping methods have been researched to suppress the resonant effects. The inverter is often controlled digitally and there is a control time delay, which is inevitable due to A/D conversion, computation times, etc. This delay degrades the stabilities and damping effects of the inverter because the frequency characteristics are different from the designed one, especially around the resonant frequency. This paper proposes a simple and effective compensation method of the control time delay to improve the damping effects. It is based on an estimation method of future state values advanced by the delay time. The proposed method is applied to the grid-connected inverter control and its effectiveness is investigated and validated through determining transfer functions of the regulated current errors by experiment.

本誌: IEEJ Journal of Industry Applications Vol.7 No.6 （2018）

本誌掲載ページ: 454-461 p

原稿種別: 論文／英語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejjia/7/6/7_454/_article/-char/ja/