高频变压器对多输入逆变器输出电压影响分析  

Analysis on output voltage of high frequency transformer to multi⁃input inverter

作　　者：张艳肖[1] 李守智[2] 徐微[1] 曹小鸽 ZHANG Yanxiao;LI Shouzhi;XU Wei;CAO Xiaoge(Xi’an Jiaotong University City College,Xi’an 710018,China;Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安交通大学城市学院,陕西西安710018 [2]西安理工大学,陕西西安710048

出　　处：《电子设计工程》2021年第21期65-69,共5页Electronic Design Engineering

基　　金：教育部产学合作协同育人新工科建设项目(KY2018-53);陕西省教育科学“十三五”规划2020年度课题(SGH20Y1880)。

摘　　要：为实现逆变器大功率和高频输出,采用多个单相桥式电压型逆变模块并联分时工作,通过变压器耦合实现高频输出。文中以3个逆变模块为例,提出一种改进的分时控制策略,不受死区时间的限制,通过延迟关断开关管的驱动脉冲,减小各逆变电路之间的相互耦合影响,分析比较了独立铁芯和共用铁芯两种不同结构的高频变压器对逆变电路的影响,实现高频输出的同时提高电压、电能质量。通过仿真和实验样机验证了该拓扑及控制策略的正确性。In order to achieve high power and high frequency output of inverters,several single⁃phase bridge voltage inverters are used to work in parallel and realize high frequency output by transformer coupling.Taking three inverters as an example,an improved time⁃sharing control strategy is proposed,which is not limited by dead⁃time,and reduces the coupling effect among Inverters by delaying switch⁃off driving pulses.The influence of two kinds of high frequency transformers with independent core and common core on the inverting circuit is analyzed and compared,so as to achieve high frequency output and improve the voltage and power quality at the same time.The correctness of the topology and control strategy is verified by simulation and experimental prototype.

关 键 词：高频逆变器 分时控制 高频变压器 独立铁芯 

分 类 号：TN713[电子电信—电路与系统]