一种新的恒频软开关变流器  

A New Constant-frequency Isolated Soft-switched Converter

作　　者：周令琛[1] 

机构地区：[1]上海第二工业大学,上海201209

出　　处：《电力电子技术》2008年第1期1-3,共3页Power Electronics

摘　　要：提出了一种新的恒频隔离式变流器,该变流器采用1个耦合电感来实现整个线路和负载范围内主开关的零电压切换。由于该耦合电感并未以1个串联电感的形式出现在负载电流通道内,故不会产生负载的周期损耗,也不会在输出整流器两端产生严重的电压振荡。该变流器的性能在1个1kW的实验原型电路中得到了证实。A new constant-frequency isolated converter was introduced in which a coupled inductor was used to achieve zero-voltage switching （ZVS） of the primary switches in the entire line and load range.Since the coupled inductor didn＇t appear as a series inductance in the load current path,it didn＇t cause a loss of duty cycle or severe voltage ringing across the output rectifiers.The operation and performance of the proposed converter are verified on a 1 kW prototype.

关 键 词：变流器/软开关 恒频 

分 类 号：TM46[电气工程—电器]