具有功率解耦功能的三端口反激式单级光伏微型逆变器  

A PV Micro-inverter Based on Three-port Flyback With Power Decoupling Function

作　　者：胡海兵[1] 黄宵驳[1] 王万宝[1] 吴红飞[1] 邢岩[1] 

机构地区：[1]江苏省新能源发电与电能变换重点实验室(南京航空航天大学),江苏省南京市210016

出　　处：《中国电机工程学报》2013年第12期47-54,185,共8页Proceedings of the CSEE

基　　金：国家自然基金项目(51177070;51077071)~~

摘　　要：提出一种具有功率解耦功能的单极光伏微型逆变器。该微型逆变器将提出的三端口反激变换器中的一个端口用于实现功率解耦,有效减小解耦所需的电容量,从而可以采用长寿命、低容值薄膜电容。详细分析该电路的基本工作原理,并给出关键设计:包括关键参数选择和控制策略。搭建一台100 W样机进行实验。实验结果表明,提出的拓扑不仅可以实现功率解耦,变换器转换效率达到91.3%。A novel single-stage PV micro-inverter with power decoupling capability is proposed in this paper. The proposed topology is based on three-port flyback with one port dedicated to power decoupling function so as to reduce the decoupling capacitance, thus allowing for long lifetime film capacitor to be used. Operation principle is analyzed in details. Key design considerations, including key parameter selections and control strategy, are given in the paper. A 100W micro-inverter prototype is built to verify the proposed topology. Experimental results show that the proposed topology can achieve power decoupling, while maintaining efficiency reaching up to 91.3%.

关 键 词：光伏微型逆变器 功率解耦 三端口变换器 反激 

分 类 号：TM85[电气工程—高电压与绝缘技术]