中间电流型双管正激式光伏微逆变器  

Mid-current-fed dual-MOSFET forward photovoltaic micro-inverter

作　　者：李家荣[1] 吴云亚[1] 阚加荣[1] 谢少军[2] 汤雨[2] 张斌锋[2] 

机构地区：[1]盐城工学院电气工程学院,江苏盐城224051 [2]南京航空航天大学自动化学院,江苏南京210016

出　　处：《电力自动化设备》2017年第12期73-79,共7页Electric Power Automation Equipment

基　　金：国家自然科学基金资助项目(51477077;51577164;51407153);江苏省第五期"333工程"资助项目;江苏省"六大人才"高峰项目~~

摘　　要：为克服现有光伏微逆变器电压应力高、结构较复杂的缺点,提出了一种中间电流型双管正激微逆变器。该变换器中所有开关都可实现软开关,并消除了变压器副边整流二极管的反向恢复损耗。分析了所提微逆变器的工作原理,并得到了微逆变器的最大占空比、占空比的预置值、开关管的电流应力以及无源元件参数。建立了所提微逆变器的实验样机,实验结果验证了所提微逆变器具有优良的性能。In order to overcome the shortcomings of high voltage stress and complex structure in the existing photovoltaic micro-inverter,a mid-current-fed dual-MOSFET forward micro-inverter is proposed. All switches in the proposed micro-inverter can achieve soft switching and eliminate the reverse recovery loss of rectifier diodes at the secondary side of the transformer. The operation principle of the proposed micro-inverter is analyzed. The parameters of the micro-inverter,i.e. maximum duty cycle,predictive value of duty cycle,current stress of switches and parameters of passive elements,are obtained. The experimental results of the prototype verify that the proposed micro-inverter has better performance.

关 键 词：光伏发电 微逆变器 电流型双管正激变换器 最大占空比 电流应力 

分 类 号：TM464[电气工程—电器] TM615