New design approach for grid-current-based active damping of LCL filter resonance in grid-connected converters

Mahmoud A. Gaafar, Gamal M. Dousoky, Emad M. Ahmed, Masahito Shoyama, Mohamed Orabi

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

This paper investigates the active damping of grid-connected LCL filter resonance using high-pass filter (HPF) of the grid current. An expression for such HPF is derived in terms of the filter components. This expression facilitates a general study of the actively damped filter behavior in the discrete time domain. Limits for the HPF parameters are derived to avoid the excitation of unstable open loop poles since such excitation can reduce both the damping performance and the system robustness. Based on this study, straightforward co-design steps for the active damping loop along with the fundamental current regulator are proposed. A numerical example along with simulation and experimental results are presented to verify the theoretical analyses.

本文言語英語
ページ(範囲)1165-1177
ページ数13
ジャーナルJournal of Power Electronics
18
4
DOI
出版ステータス出版済み - 7 1 2018

All Science Journal Classification (ASJC) codes

  • 制御およびシステム工学
  • 電子工学および電気工学

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