一种零电压转换H6桥光伏并网逆变器的研究  

Research on a Zero-voltage-transition H6 Type PV Grid-connected Inverter

作　　者：陈荣[1,2] 张洋 CHEN Rong;ZHANG Yang(School of Electrical Engineering,Yancheng Institute of Technology,Yancheng 224051,Jiangsu,China;School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu,China)

机构地区：[1]盐城工学院电气学院,江苏盐城224051 [2]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《实验室研究与探索》2018年第10期80-84,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(31501221)

摘　　要：为了提高非隔离型单相光伏并网逆变器的效率和减少漏电流,提出一种基于H6桥的非隔离型单相光伏并网逆变器的零电压转换技术。改变了传统的硬开关方式,引入了软开关技术,在高频主开关的直流旁路增加零电压转换电路,通过增加的辅助开关、谐振电容和谐振电感实现高频主开关的零电压的关断和开通。在仿真软件PSIM中搭建仿真实验模型,结果表明零电压转换H6桥的非隔离型单相光伏并网逆变器能够有效的降低开关损耗,提高逆变器效率而且保持了更低的漏电流。In order to improve the efficiency and reduce the leakage current of non-isolated single-phase PV grid-connected inverter,a soft switching technique,called zero-voltage-transition,is proposed in this paper based on H6 type transformer less single-phase PV grid-connected inverter.The zero-voltage-transition changes the traditional way of hard switching into soft switching technology,can achieve zero-voltage turn off for main switches by auxiliary switch increased.The simulation model is built in the simulation software PSIM,and simulation results show that a PV grid-connected inverter with zero-voltage-transition H6 type transformer can effectively improve the efficiency of circuit and keep the lower leakage current.

关 键 词：漏电流 软开关 零电压转换 逆变器 

分 类 号：TM621.3[电气工程—电力系统及自动化]