两种组合双向正激式高频环节逆变器的比较  

Comparision of two combined bi-directional forward mode inverters with high frequency link

作　　者：王国玲[1] 陈道炼[1] 

机构地区：[1]福州大学电力电子与电力传动研究所,福建福州350108

出　　处：《电机与控制学报》2011年第8期39-46,共8页Electric Machines and Control

基　　金：福建省自然科学基金重点项目(E0620002);中国高校博士学科点专项科研基金(20060386002)

摘　　要：针对组合双向正激直流变换器型和直流斩波器型高频环节逆变器电路结构的不同,首次对这两种高频环节逆变器的控制策略、原理特性、关键电路参数设计准则等进行比较研究。采用理论推导方法,获得两种逆变器占空比、输出电压波形质量、高频变压器匝比与损耗、功率开关电压与电流应力等关键参数的对比关系。研究与实验结果表明,组合双向正激直流斩波器型高频环节逆变器电路具有更优良的综合性能,即属于单级功率变换且不存在环流,变压器匝比N2/N1由42/3降为39/3,输出电压精确度由±2V提高为±1V。组合双向正激式高频环节逆变器,在要求高频电气隔离、高功率密度、高变换器效率的逆变场合具有良好的应用前景。For the different circuit topologies of combined bi-directional forward converter mode and forward chopper mode inverters with high frequency（HF） link,control strategies,theory characteristics and design criteria for those key circuit parameters of these two inverters were compared and researched in this paper.Taking the theoretical derivation method,a series of important relativities of the quality of output voltage waveform,turn ratio and power losses of HF transformer,input filter,voltage and current stresses of power switches between these two inverters were obtained.Those analysis and experiment results indicate that the combined bi-directional forward chopper mode inverter has better performance due to its single power stage and none current circulation.What＇s more,its turn ratio N2/N1 is reduced from 42/3 to 39/3 and output voltage variation is improved from inner ±2V to inner ±1V.These two combined bi-directional forward mode inverters with HF link are featured by application prospect in the inverting field of galvanic occasion,high power density,and high power efficiency.

关 键 词：逆变器 高频环节 正激直流变换器 正激直流斩波器 双向功率流 组合式 

分 类 号：TM46[电气工程—电器]