梁晖;罗浩;聂志强;陈彪;

• 1:国家能源主动配电网技术研发中心(北京交通大学)
• 2:光宝通信(广州)有限公司北京海淀技术服务分公司

摘要(Abstract)：

在全桥倍流DC/DC拓扑的基础上加以改进,提出了一种高频隔离光伏并网逆变器拓扑,所提拓扑保留了倍流电路电流纹波小等优点;且高频变压器输出经过一级变换直接输出低频交流,无直流环节,有利于提高系统效率。引入混合型正弦脉宽脉位调制(sinusoidal pulse width and position modulation,SPWPM)策略,将正弦调制和高频逆变功能均在前级逆变器完成;后级倍流电路工作在工频和高频混合模式,有利于减小开关管损耗及保证电流平滑换流。同时为消除并网电流控制策略中静态误差等问题,采用比例谐振(proportion resonant,PR)控制器代替传统的比例积分(proportion integral,PI)控制器。仿真分析和实验结果验证了所提控制策略的可行性。

关键词(KeyWords)： 光伏并网逆变器;高频隔离;混合型SPWPM;PR控制器

Abstract:

Keywords:

基金项目(Foundation): 国家能源应用技术研究及工程示范项目(基于分层储能的主动配电网共性技术研究(NY20150301))~~

作者(Author): 梁晖;罗浩;聂志强;陈彪;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.08.008

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