带次级谐振倍压整流电路的移相变换器研究  

Research on phase shift converter with secondary resonance voltage doubler rectifier circuit

作　　者：贺根华 祁承超[1] 柳鑫 王栋 HE Genhua;QI Chengchao;LIU Xin;WANG Dong(Air Force Early Warning Academy,Wuhan 430019, China)

机构地区：[1]空军预警学院,武汉430019

出　　处：《空军预警学院学报》2018年第6期457-460,465,共5页Journal of Air Force Early Warning Academy

摘　　要：针对高输出电压移相全桥直流变换器滞后桥臂软开关实现范围窄、次级整流电路二极管电压应力大、二极管硬关断等问题,引入辅助电流源网络和谐振四倍压整流电路,扩大滞后桥臂软开关实现范围,降低二极管电压应力,实现二极管零电流关断(ZCS).首先分析了该变换器的工作原理,然后对变换器的关键参数进行设计,最后结合研制的一台输出功率2000 W的实验样机,进行了实验.实验结果验证了该变换器电路拓扑的可行性.Aiming at the problem that the high output voltage phase-shifted full-bridge DC converter has a narrow actuation range of lagging bridge arm soft switch,a large diode voltage stress of the secondary rectifier circuit,and hard switch-off of the diode and so on,this paper introduces an auxiliary current source network and a resonant quadruple voltage rectifier circuit to expand the actuation range of lagging bridge arm soft-switch,to reduce the diode voltage stress,and achieve diode zero-current switch-off(ZCS).Firstly,the paper analyzes the working principle of converter,and then designs the key parameters of converter.Finally,an experimental prototype with an output power of 2000 W is developed and the experiment is carried out.The experimental results verify the feasibility of the circuit topology.

关 键 词：高输出电压 辅助电流源网络 谐振四倍压整流电路 移相变换器 

分 类 号：TM46[电气工程—电器]