{"title":"A Negative Parallel Virtual RLC Damper for LC-filtered Constant Power Load in DC Microgrid","authors":"Rujing Zhang, Jintao Lei, Xin Xiang, Wuhua Li, Xiangning He, R. Zhao","doi":"10.1109/POWERCON53785.2021.9697472","DOIUrl":null,"url":null,"abstract":"In DC microgrid, the impedance intersection of LC filter and constant power load (CPL) may cause the instability of the bus voltage, and one of the effective solutions is to increase the input impedance magnitude of CPL by inserting series-virtual resistance. However, large series-virtual resistance may lead to a poor performance of CPL to some extent. In order to overcome this drawback, this paper proposes a negative parallel virtual RLC damper to stabilize the whole system while not decreasing the performance of CPL. Furthermore, the impact of negative parallel virtual RLC damper on performance of CPL is analyzed. Finally, the proposed negative parallel virtual RLC damper method is validated in simulation.","PeriodicalId":216155,"journal":{"name":"2021 International Conference on Power System Technology (POWERCON)","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2021-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2021 International Conference on Power System Technology (POWERCON)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/POWERCON53785.2021.9697472","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
In DC microgrid, the impedance intersection of LC filter and constant power load (CPL) may cause the instability of the bus voltage, and one of the effective solutions is to increase the input impedance magnitude of CPL by inserting series-virtual resistance. However, large series-virtual resistance may lead to a poor performance of CPL to some extent. In order to overcome this drawback, this paper proposes a negative parallel virtual RLC damper to stabilize the whole system while not decreasing the performance of CPL. Furthermore, the impact of negative parallel virtual RLC damper on performance of CPL is analyzed. Finally, the proposed negative parallel virtual RLC damper method is validated in simulation.
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