摘要
提出了一种无源辅助谐振换流新型软开关变换器。即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作为开关器件的高电压大功率场合。本文以其在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它基本的DC-DC变换器中。制作了一个使用IGBT的5kW–20kHz的实验样机,通过仿真和实验验证了该变换器的有效性。
A novel soft switching converter with passive auxiliary resonant commutation is presented in the paper. Soft switching of the switch can be achieved by using a passive auxiliary resonant network. It is very attractive for the high power application where IGBT is predominantly used as the power switch. Its operation principle is analyzed through its application to 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 5 kW-20 kHz prototype that uses IGBT was made. The effectiveness of the proposed converter is confirmed by the simulation and experiment results.
出处
《仪器仪表学报》
EI
CAS
CSCD
北大核心
2009年第11期2347-2353,共7页
Chinese Journal of Scientific Instrument
基金
国家863计划重点项目(2006AA04Z183)
国家教育部回国人员启动基金资助项目
