一种新型无源软开关变换器  

A Novel Passive Soft Switching Converter

作　　者：褚恩辉[1,2] 金升[1] 张化光[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004 [2]流程工业综合自动化教育部重点实验室,辽宁沈阳110004

出　　处：《电子学报》2010年第8期1963-1968,共6页Acta Electronica Sinica

基　　金：教育部归国留学基金;国家863高技术研究发展计划(No.2006AA04Z183)

摘　　要：为实现一种结构简单、高效、高频、低的电压应力、易于控制的软开关变换器.提出了一种新型无源软开关变换器.它通过采用简单的无源辅助谐振网络实现了开关管的软开关,开关管电压电流应力小,解决了输出二极管反向恢复问题.特别适用于以IGBT(Insulated Gate Bipolar Transistor)作为开关器件的高电压大功率场合.该文以其在Boost变换器的应用为例分析了它的工作原理,软开关实现条件,给出了谐振参数的设计方法,该软开关设计思想可以推广到其他基本的DC-DC变换器中.制作了一个使用IGBT的5kW^20kHz的实验样机,通过实验验证了该变换器的有效性.In order to realize a simple topology,high efficiency,high frequency,low voltage stress,easy to control soft switching three phase inverter,A novel Passive Assisted Soft Switching Converter is presented in the paper.Soft Switching of the switch can be achieved by using Passive Assisted Resonant network.It is very attractive for high power application where IGBT is predominantly used as the power switch.Its operation principle is analyzed through its application to the boost converter.The condition of soft switching and the design considerations are analyzed in detail.The novel soft switching cell can be also used in other basic dc-dc converter.A 5kW～20kHz prototype which uses IGBT（insulated gate bipolar transistor） is made.The effectiveness of the proposed converter is confirmed by the experimental results.

关 键 词：无源DC-DC变换器 零电流软开关 零电压软开关 

分 类 号：TM464[电气工程—电器]