{"title":"A HVDC Converter for Offshore Wind Power Farm Combined with Distributed Energy Storage","authors":"Zhongren Gu, Lidan Zhou, Gang Yao, Jie Wang","doi":"10.1109/APET56294.2022.10073099","DOIUrl":null,"url":null,"abstract":"Different from the large-scale high-voltage AC-DC converters required by traditional offshore wind farms, this paper proposes a low-cost non-isolated converter topology for DC collection and transmission. Input voltage is 20kV DC and onput voltage is 200kV DC. The corresponding modulation strategy and control scheme are implemented, and the distributed energy storage module is connected to smooth the input power fluctuation. Combined with the dynamic consistency algorithm, the State of Charge (SOC) equalization control strategy is designed to equalize the energy storage modules between the bridge arms. Based on Matlab/Simulink, steady-state and dynamic simulation analysis under ±50% power fluctuation of the proposed topology and control strategy is carried out, which shows fluctuation of output is reduced by 40%. Finally, an experimental platform is built to verify the rationality of the theoretical and simulation analysis.","PeriodicalId":201727,"journal":{"name":"2022 Asia Power and Electrical Technology Conference (APET)","volume":"23 4","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 Asia Power and Electrical Technology Conference (APET)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APET56294.2022.10073099","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Different from the large-scale high-voltage AC-DC converters required by traditional offshore wind farms, this paper proposes a low-cost non-isolated converter topology for DC collection and transmission. Input voltage is 20kV DC and onput voltage is 200kV DC. The corresponding modulation strategy and control scheme are implemented, and the distributed energy storage module is connected to smooth the input power fluctuation. Combined with the dynamic consistency algorithm, the State of Charge (SOC) equalization control strategy is designed to equalize the energy storage modules between the bridge arms. Based on Matlab/Simulink, steady-state and dynamic simulation analysis under ±50% power fluctuation of the proposed topology and control strategy is carried out, which shows fluctuation of output is reduced by 40%. Finally, an experimental platform is built to verify the rationality of the theoretical and simulation analysis.
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