基于移相全桥软开关电路整流桥寄生振荡的抑制  

Suppression of rectifier bridge parasitic oscillation in soft-switching circuit based on phase-shifted full-bridge converter

作　　者：樊志鹏 张强 鲁朕宁 FAN Zhipeng;ZHANG Qiang;LU Zhenning(CRRC Dalian R&D Co.,Ltd.,Dalian 116052,China)

机构地区：[1]中车大连电力牵引研发中心有限公司,辽宁大连116052

出　　处：《铁道机车与动车》2022年第2期32-35,I0002,共5页Railway Locomotive and Motor Car

摘　　要：基于移相全桥变换器的软开关电路在后级不控整流的二极管反向恢复时,极易产生寄生振荡,且形成较高的尖峰电压。为解决该问题,对振荡产生的原因进行分析,介绍了几种抑制振荡的方法;阐述了为减小整流桥寄生振荡,在变压器副边增加辅助电路的方法;通过仿真结果证明该辅助电路对整流桥寄生振荡的抑制是有效的。The soft-switching circuit based on the phase-shifted full-bridge converter is prone to create a parasitic oscillation and a higher peak voltage resulted by the reverse recovery of the rear diode uncontrolled rectification.In order to solve the problem,the causes of oscillation are analyzed.The paper introduces several methods of suppressing oscillation and expounds the method of adding an auxiliary circuit on the secondary side of the transformer to reduce the rectifier bridge parasitic oscillation.The simulation results show that the auxiliary circuit can effectively suppress the rectifier bridge parasitic oscillation.

关 键 词：ZVZCS 尖峰电压 寄生振荡 辅助电路 

分 类 号：U264.371[机械工程—车辆工程]