摘要
二极管箝位的移相全桥变换器工作在电感电流断续模式时,箝位二极管工作在硬关断状态,极易损坏,严重影响系统的可靠性。该文分析了该变换器的工作原理,提出二极管加电流互感器箝位的移相全桥变换器,该变换器能够有效地减小箝位二极管的导通时间,使其能够自然关断。详细分析了所提变换器的工作原理,给出主要参数的设计方法,并通过实验验证了原理分析的正确性。
The clamping diodes of the phase-shifted full-bridge converter （PSFB converter） turn off with serious reverse recovery in discontinuous current mode （DCM）, deteriorating the reliability of the converter dramatically. In order to solve the issue, a novel PSFB converter with clamping diodes and current transformer is proposed. The clamping diodes can turn off naturally and its conduction time is shortened by introducing a current transformer. The operation principle of the novel converter is analyzed and verified by a 1200W module. The design methods of the main parameters are given.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2008年第15期23-31,共9页
Proceedings of the CSEE
关键词
移相全桥变换器
箝位二极管
断续电流模式
电流互感器
phase-shifted full-bridge converter
clampingdiodes
discontinuous current mode
current transformer
