{"title":"Design-Oriented Dissipativity Robustness Enhancement for Current Control of LCL- Filtered Grid-Following VSCs","authors":"Shan He, Frede Blaabjerg","doi":"10.1109/APEC43580.2023.10131261","DOIUrl":null,"url":null,"abstract":"Capacitor current active damping can effectively enhance dissipativity of current control for grid-connected voltage source converters. However, the dissipative characteristic of converter output admittance can easily be jeopardized by capacitor voltage feedforward and passive filter parameter deviation. To fill this gap, a design-oriented control scheme is proposed in this paper. First, a moving-average-filter-based filter is inserted in the capacitor voltage feedforward path to achieve the dissipativity near the switching frequency. Then, the capacitor current damping coefficient is designed based on the required passive filter parameter deviation. Finally, the effectiveness of the proposed scheme is verified through the experiments.","PeriodicalId":151216,"journal":{"name":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2023 IEEE Applied Power Electronics Conference and Exposition (APEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APEC43580.2023.10131261","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
Capacitor current active damping can effectively enhance dissipativity of current control for grid-connected voltage source converters. However, the dissipative characteristic of converter output admittance can easily be jeopardized by capacitor voltage feedforward and passive filter parameter deviation. To fill this gap, a design-oriented control scheme is proposed in this paper. First, a moving-average-filter-based filter is inserted in the capacitor voltage feedforward path to achieve the dissipativity near the switching frequency. Then, the capacitor current damping coefficient is designed based on the required passive filter parameter deviation. Finally, the effectiveness of the proposed scheme is verified through the experiments.
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