袁义生;张伟平;朱本玉;彭春华;

• 1:华东交通大学电气学院

摘要(Abstract)：

提出了一种非隔离光伏并网逆变器拓扑,该拓扑在全桥逆变电路的基础上引入2个开关管构成一条新的续流回路,将电路桥臂中点对直流母线负端的电位钳位在0.5倍的输入电压(Uin),并将太阳能电池板与电网隔开。通过采用有效的驱动逻辑,实现了续流模态工作的2个开关管的软开通。详细分析了该拓扑的各个工作模态,建立了电路的共模等效模型,研究了共模电流频谱与电路参数和开关频率的关系。设计了1 000 W光伏并网逆变器样机,实验结果验证了所提拓扑的有效性。

关键词(KeyWords)： 光伏逆变器;共模电压;共模电流;寄生参数

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51467005);; 江西省自然科学基金项目(20142BAB206025)~~

作者(Author): 袁义生;张伟平;朱本玉;彭春华;

Email:

DOI: 10.13335/j.1000-3673.pst.2014.12.003

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