吴学智;尹靖元;杨捷;童亦斌;

• 1:北京交通大学电气工程学院

摘要(Abstract)：

提出了一种采用双级无隔离变压器的新型单相光伏并网逆变器拓扑,由于光伏池板与电网零线直接相连,可消除光伏池板对地的共模电压,解决了共模漏电流问题。所提拓扑采用了高频倍压的方式实现升压变换器与并网逆变器的连接,避免了三电平并网逆变器存在的中点电位二次脉动问题,降低了直流侧滤波电容的容量需求。为实现对单相并网电流的无误差控制,并网控制中采用比例谐振控制器,增加了系统的稳定性和提高了并网电流质量。仿真与实验结果均表明所提光伏并网逆变器拓扑的可行性。

关键词(KeyWords)： 光伏并网逆变器;无隔离变压器;中点箝位型三电平;比例谐振控制

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 吴学智;尹靖元;杨捷;童亦斌;

Email:

DOI: 10.13335/j.1000-3673.pst.2013.10.036

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