{"title":"Leg-balancing Control of Modular Multilevel Converter under Asymmetric Condition","authors":"Ji Yu, Xianggen Yin, Jiaxuan Hu, J. Lai","doi":"10.1109/CEEPE55110.2022.9783239","DOIUrl":null,"url":null,"abstract":"Modular Multilevel Converter (MMC) is widely used in high-power systems such as HVDC transmission. Improving the fault ride-through capability of MMC is very important for a power system. Aiming at the problem of unbalanced leg power under asymmetric grid conditions, an improved leg balancing control strategy based on zero-sequence voltage and dc circulating current injection of MMC is proposed. When the grid voltage is asymmetric, the proposed leg balancing control strategy can eliminate the impact of ac grid voltage asymmetry on leg power, and ensure the safe and stable operation of MMC. Finally, the effectiveness of the proposed control strategy is verified by simulation.","PeriodicalId":118143,"journal":{"name":"2022 5th International Conference on Energy, Electrical and Power Engineering (CEEPE)","volume":"186 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 5th International Conference on Energy, Electrical and Power Engineering (CEEPE)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CEEPE55110.2022.9783239","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
Modular Multilevel Converter (MMC) is widely used in high-power systems such as HVDC transmission. Improving the fault ride-through capability of MMC is very important for a power system. Aiming at the problem of unbalanced leg power under asymmetric grid conditions, an improved leg balancing control strategy based on zero-sequence voltage and dc circulating current injection of MMC is proposed. When the grid voltage is asymmetric, the proposed leg balancing control strategy can eliminate the impact of ac grid voltage asymmetry on leg power, and ensure the safe and stable operation of MMC. Finally, the effectiveness of the proposed control strategy is verified by simulation.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
