{"title":"The Existence Condition for Power-Flow Considering Current Constraints and Control Objectives of DC Microgrids with CPLs under Distributed Control","authors":"Jiawei Li, Zhangjie Liu, M. Su, Ruisong Liu","doi":"10.1109/icet55676.2022.9823986","DOIUrl":null,"url":null,"abstract":"High-precision current sharing and voltage regulation are the objects of a DC microgrid. In addition, a feasible power solution is the key to the stable operation of DC microgrid. Therefore, it is important to investigate the existence of the feasible power-flow solution of DC microgrid, especially for those contain m CPLs. In this paper, a distributed control method is proposed to achieve current sharing and voltage regulation. On this basis, a power-flow equation of the DC microgrid considering current constraints with n DGs and m CPLs is built. Then, under the limitation of currents of DGs, the sufficient solvability conditions are obtained based on Brouwer's fixed-point theorem. Last, simulation results verify the feasibility of the proposed theorems.","PeriodicalId":166358,"journal":{"name":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","volume":"36 6","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE 5th International Conference on Electronics Technology (ICET)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/icet55676.2022.9823986","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
High-precision current sharing and voltage regulation are the objects of a DC microgrid. In addition, a feasible power solution is the key to the stable operation of DC microgrid. Therefore, it is important to investigate the existence of the feasible power-flow solution of DC microgrid, especially for those contain m CPLs. In this paper, a distributed control method is proposed to achieve current sharing and voltage regulation. On this basis, a power-flow equation of the DC microgrid considering current constraints with n DGs and m CPLs is built. Then, under the limitation of currents of DGs, the sufficient solvability conditions are obtained based on Brouwer's fixed-point theorem. Last, simulation results verify the feasibility of the proposed theorems.
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