基于充电机的3kW移相全桥变换器  

A 3kW Charger Based Phase-shifted Full-bridge Converter

作　　者：程实[1] 郭育华[1] 余璞[1] 

机构地区：[1]磁浮技术与磁浮列车教育部重点实验室西南交通大学电气工程学院,四川成都610031

出　　处：《电力电子技术》2016年第3期88-90,共3页Power Electronics

摘　　要：为了抑制输出整流二极管反向恢复引起的电压振荡,采用初级二极管箝位的电路拓扑设计移相全桥零电压开关(ZVS)变换器。通过改变移相角稳定输出电压,将开关管的结电容和外并电容与串接的电感作为谐振元件,实现开关管的ZVS。实验表明,该方案在实现软开关的同时,可以较好地抑制输出整流二极管上的电压振荡,减小输出整流二极管的电压应力。In order to suppress voltage oscillation caused by the reverse recovery of the output rectifier diode, a phase-shifted full-bridge zero voltage switching（ZVS） converter is designed by using primary side diode clamp circuit topology.By changing the phase-shifted angle this converter can regulate the output voltage and by using the switch junction capacitance, external capacitance and series inductance as the resonant elements, it can realize ZVS. Experiment shows that this proposed scheme can achieve soft switching and better suppress the output voltage oscillation of the rectifier diode and reduce output rectifier diode voltage stress.

关 键 词：变换器 零电压开关 软开关 

分 类 号：TM46[电气工程—电器]