Dissipativity Robustness Enhancement for LCL-Filtered Grid-Connected VSCs With Multisampled Grid-Side Current Control
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影响因子：5.697
DOI码：10.1109/TPEL.2022.3218378
发表刊物：IEEE Transactions on Power Electronics
关键字：Dissipation, grid-side current control, grid voltage feedforward, LCL-filter parameter deviation, multisampling pulsewidth modulation (PWM)
摘要：Capacitor current active damping is a common method to achieve dissipation for LCL -filtered grid-connected converters using grid-side current control. However, the dissipative characteristic of converter output admittance near the critical frequency can easily be jeopardized by the filter parameter deviation. Besides, the grid voltage feedforward is often overlooked when designing dissipativity, which is, however, preferred to improve transient performance. To tackle these challenges, a multisampled current control scheme is proposed in this article. By combining the capacitor current active damping and the capacitor voltage feedforward, not only the dissipation can be achieved below the Nyquist frequency but also the dissipativity robustness against the filter parameter deviation is enhanced. Besides, the LCL -filter resonant frequency can be designed near the critical frequency, which simplifies the internal stability design. Finally, the effectiveness of the proposed method is verified through the experiments.
论文类型：期刊论文
学科门类：工学
文献类型：J
卷号：38
期号：3
页面范围：3992-4004
ISSN号：0885-8993
是否译文：否
发表时间：2022-10-31
收录刊物：SCI
发布期刊链接：https://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=63