{"title":"A new circulating-current restraining method for modular multilevel converter","authors":"Ming Lei, Yao-hua Li, Qiongxuan Ge, Xiaoxin Wang","doi":"10.1109/ECCE-ASIA.2013.6579217","DOIUrl":null,"url":null,"abstract":"The common mode current of upper arm and lower arm in a modular multilevel converter (MMC) can be divided into two parts: a DC component and an AC component which is called the circulating current. The circulating current will increase power losses and may threaten the safe operation of the power devices and capacitors. To solve this question, this paper analyses the harmonics of the circulating current and makes the conclusion that the main components of circulating current are even and low order harmonics. Based on this conclusion, a new control method with parallel PI regulators is proposed. At last, experiment results demonstrate the correctness of the theoretical derivation and the effectiveness of the proposed control scheme.","PeriodicalId":301487,"journal":{"name":"2013 IEEE ECCE Asia Downunder","volume":"92 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE ECCE Asia Downunder","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ECCE-ASIA.2013.6579217","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 5
Abstract
The common mode current of upper arm and lower arm in a modular multilevel converter (MMC) can be divided into two parts: a DC component and an AC component which is called the circulating current. The circulating current will increase power losses and may threaten the safe operation of the power devices and capacitors. To solve this question, this paper analyses the harmonics of the circulating current and makes the conclusion that the main components of circulating current are even and low order harmonics. Based on this conclusion, a new control method with parallel PI regulators is proposed. At last, experiment results demonstrate the correctness of the theoretical derivation and the effectiveness of the proposed control scheme.
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
