电测与仪表2016，Vol.53Issue(17)：106-111,6.
带续流开关的中点箝位型非隔离光伏逆变器
A neutral point clamped non-isolated PV inverter with a freewheeling switch
摘要
Abstract
In order to meet the requirement of common-mode leakage current in photovoltaic ( PV) generation sys-tems, a neutral point clamped non-isolated PV inverter with a freewheeling switch is proposed .A freewheeling switch is added in AC side of the full bridge inverter in this topology , which will improve the non-isolated PV inverter conver-sion efficiency because the freewheeling switch makes the output of the solar panels off the grid .On the other hand , common-mode voltage remains constant on power processing and freewheeling stage owing to the neutral point clamped circuit.The operational principle of topology is analyzed in detail and its controlling strategy is introduced in this pa -per.It is proved that common-mode performance of the proposed topology was good by Saber simulation software .The effectiveness and feasibility of the proposed topology and strategy have been verified in a prototype rated at 300 W.关键词
非隔离/光伏逆变器/共模电压/漏电流/箝位Key words
non-isolated/PV inverter/common-mode voltage/leakage current/neutral point clamped分类
信息技术与安全科学引用本文复制引用
叶海云,马海啸..带续流开关的中点箝位型非隔离光伏逆变器[J].电测与仪表,2016,53(17):106-111,6.基金项目
江苏省创新工程科研实践计划 （）
