中文摘要：

提出一种简单有效的方法来缓解移相全桥（PSFB）变换器整流电压应力，且能提高传统PSFB变换器总体效率。前提是PSFB零电压开关（zvs）变换器的等效电路在电压振荡期间可视为一个五阶模型．由此．可通过改变寄生参数来调节整个整流器振铃电压幅值。当整流器的振铃电压能被抑制在一个可接受范围内时，则有可能完全去掉RC缓冲电路来提高效率。240 W（10 A，400 V／24 V）实验模型电压应力减小了15 v。效率增加了2％。

英文摘要：

A simple and effective method is proposed to release the voltage stress of phase-shifted full-bridge （PSFB） co-nverter and improve overall efficiency of the conventional PSFB converter.This method is based on the equivalent cir-cuit of the PSFB zero voltage switching （ZVS） converter during the voltage oscillation period can be treated as a fifth-order model, and the amplitude of the voltage ringing across the rectifier can be retrained by adjusting the inductor inthe primary-side.h is even possible to remove the RC snubber circuit completely to improve the effficiency,the volt-age stresses of the rectifier can still be limited in an acceptable level.Reduction of 15 V voltage stress and incrementof 2% efficiency can be obtained in the 240 W（10 A,400 V/24 V） experimental prototype.