一种新颖的反激式并网逆变器  

A novel flyback grid connected inverter

作　　者：宁泽宇 江加辉 陈道炼 NING Ze yu;JIANG Jia hui;CHEN Dao lian(The College of Electrical Engineering,Qingdao University,Qingdao 266071,China)

机构地区：[1]青岛大学电气工程学院,山东青岛266071

出　　处：《电子设计工程》2020年第7期10-14,共5页Electronic Design Engineering

基　　金：山东省自然科学基金(ZR2019QEE004)。

摘　　要：研究了一种新颖的反激式并网逆变器,从电路拓扑、控制策略、稳态原理特性、关键电路参数设计等相关内容对此逆变器进行了研究分析,此并网逆变器是由具有多路串联同时选择功率开关的隔离反激直流变换器和极性反转逆变桥级联组合而成,采用输出电流瞬时值反馈最大功率输出SPWM控制策略。设计并研制了500 W 38 V DC/220V50HzAC的实验样机,其电路结构简洁、输入输出电气隔离、输出并网电流优质、变换效率高,在小功率多输入源联合供电场合具有重要应用价值。In this paper,a novel flyback grid connected inverter is studied and analyzed from the aspects ofcircuittopology,control strategy,steady-state principle characteristics,design of key circuit parameters,etc.the grid connected inverter is composed of an isolated flyback DC converter with multi-channel series connection and simultaneous selection of power switch and a polar inversion inverter bridge in cascade.The output current is adopted Instantaneous value feedback maximum power output SPWM control strategy.The experimental prototype of 500 W 38 V DC/220 V50 Hz AC is designed and developed.It has the advantages of simple circuit structure,electrical isolation of input and output,high quality of output grid current and high conversion efficiency.It has important application value in low-power multi input power supply occasions.

关 键 词：多输入逆变器 准单级 反激型 最大功率输出 

分 类 号：TN03[电子电信—物理电子学]