非隔离光伏并网逆变器漏电流抑制技术研究综述  

A review of leakage current suppression techniques for non-isolated photovoltaic grid-connected inverter

作　　者：廖志凌[1] 崔晓晨[1] 熊颖杰[1] Jih-Sheng Lai 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013 [2]弗吉尼亚理工大学电子与计算机工程系,美国布莱克斯堡24060

出　　处：《电测与仪表》2015年第22期100-107,128,共9页Electrical Measurement & Instrumentation

基　　金：中国博士后基金资助项目(2012M521009);江苏省高校自然科学研究项目(11KJB470005);江苏高校优势学科建设工程资助项目(PAPD)基金

摘　　要：漏电流抑制是非隔离光伏并网逆变系统需要解决的关键问题之一。为了能够充分利用现有的国内外研究成果,从单相非隔离光伏并网逆变器出发,对漏电流抑制技术研究的三个主要问题——漏电流分析模型、开关调制方式、新型非隔离逆变电路拓扑分别进行了研究与总结,并分析比较了各种拓扑结构的优缺点。最后对提高可抑制漏电流非隔离并网逆变器的性能、提高系统逆变效率给出了建议。Leakage current is one of the key issues which need to be solved in a non-isolated photovoltaic grid-con- nected inverter system. In order to utilize the domestic and foreign research results, in this paper, starting from the single-phase non-isolated photovoltaic grid-connected inverter, three major problems associated with the leakage cur- rent and its suppression techniques including leakage current analysis model, switching modulation mode, and new non-isolated inverter topologies are studied, and the advantages and disadvantages of different circuit topologies are analyzed and compared. Finally, some suggestions on improving the performance and efficiency of the non-isolated grid-connected inverter while suooressing leakage current are offered.

关 键 词：光伏并网 非隔离 漏电流 逆变器 

分 类 号：TM93[电气工程—电力电子与电力传动]