高频软开关PWM功率变换技术的发展与现状

Development and Present Status of High Frequency Soft Switching PWM Power Converting Techniques

近来，电力电子技术研究人员提出了许多软开关脉宽调制（ＰＷＭ）功率变换技术，这类技术综合了传统的ＰＷＭ技术和谐振技术的优点，避免了它们的不足。本文介绍了三类零电压软开关ＰＷＭ变换器（零电压开关准方法变换器、零电压开关ＰＷＭ变换器、零电压转换ＰＷＭ变换器）和两类零电流软开关ＰＷＭ变换器（零电流开关ＰＷＭ变换器。

Recently,power electronics reaschers have proposed many soft switching PWM power converting techniques,which combined advantages of both conventional PWM and resonant converters while avoided their respective limitations.In this paper,the features and operating principles of three classes of zero voltage soft switching PWM convevters (zero voltage switching quasi square wave converters,zero voltage switching PWM converters,and zero voltage transition PWM converters) and two classes of zero current soft switching PWM converters(zero current switching PWM converters and zero current transition PWM converters) are introduced.