PARALLEL-MODE EXTENDED-PERIOD QUASI-RESONANT CONVERTER

被引：34

作者：

CHENG, KWE

EVANS, PD

机构：

[1] School of Electronic and Electrical Engineering, University of Birmingham

来源：

IEE PROCEEDINGS-B ELECTRIC POWER APPLICATIONS | 1991年 / 138卷 / 05期

关键词：

CONVERTERS; POWER ELECTRONICS; RESONANT CONVERTERS; SWITCHED-MODE POWER SUPPLIES;

D O I：

10.1049/ip-b.1991.0029

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new circuit, a parallel-mode, extended-period, zero-current quasiresonant convertor (PM-EP-ZCQRC), is introduced. It has low switching losses, because the switching conditions are those of a quasiresonant convertor, but it operates at constant frequency by using the duty-ratio technique of conventional switched-mode power supplies for output regulation. The modes of operation of the circuit are described and analysed. The results of open-loop tests on a prototype circuit are presented and are shown to agree with predictions. The efficiency of the circuit was found to be 80 to 90% and a comparison of loss components with those in a quasiresonant convertor (QRC) is given.

引用

页码：243 / 251

页数：9