Stability Analysis and Active Damping for LLCL-Filter-Based Grid-Connected Inverters
Stability Analysis and Active Damping for LLCL-Filter-Based Grid-Connected Inverters
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: 2015/05/01
タイトル(英語): Stability Analysis and Active Damping for LLCL-Filter-Based Grid-Connected Inverters
著者名: Min Huang (Department of Energy Technology, Aalborg University), Xiongfei Wang (Department of Energy Technology, Aalborg University), Poh Chiang Loh (Department of Energy Technology, Aalborg University), Frede Blaabjerg (Department of Energy Technology, A
著者名(英語): Min Huang (Department of Energy Technology, Aalborg University), Xiongfei Wang (Department of Energy Technology, Aalborg University), Poh Chiang Loh (Department of Energy Technology, Aalborg University), Frede Blaabjerg (Department of Energy Technology, Aalborg University), Weimin Wu (Electrical Engineering, Shanghai Maritime University)
キーワード: LLCL filter,grid-connected converter,active damping,current control,resonant frequency,stability
要約(英語): A higher-order passive power filter (LLCL filter) for a grid-connected inverter is becoming attractive for the industrial applications owing to the possibility of reducing the cost of copper and the magnetic material. To avoid the well-known resonance problems of the LLCL filter, it is necessary to use either passive or active damping methods. In this study, the stability of the LLCL-filter-based grid-connected inverter is analyzed and a critical resonant frequency for the LLCL filter is identified when sampling and transport delays are considered. In the high-resonant-frequency region, active damping is not required; however, active damping is necessary in the low-resonant-frequency region. The basic LLCL resonance damping properties of different feedback states based on a notch filter concept are also studied. Then, an active damping method using capacitor current feedback for the LLCL filter is introduced. On the basis of this active damping method, a design procedure for the controller is given. Last, both simulation and experimental results are provided to validate the theoretical analysis of this study.
本誌: IEEJ Journal of Industry Applications Vol.4 No.3 (2015) Special Issue on “IPEC-Hiroshima”
本誌掲載ページ: 187-195 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/4/3/4_187/_article/-char/ja/
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