Design considerations of transformer DC bias of forward converter with active-clamp reset

被引：24

作者：

Li, Q ^{[1
]}

Lee, FC ^{[1
]}

Jovanovic, MM ^{[1
]}

机构：

[1] Virginia Polytech Inst & State Univ, Bradley Dept Elect Engn, Virginia Power Elect Ctr, Blacksburg, VA 24061 USA

来源：

APEC'99: FOURTEENTH ANNUAL APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION, CONFERENCE PROCEEDINGS, VOLS 1 & 2 | 1999年

关键词：

D O I：

10.1109/APEC.1999.749735

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：

In the forward converter with active-clamp reset circuit, the leakage inductance of the transformer and the parasitic capacitances of the switches produce a de bias of the magnetizing current of the transformer. The de bias of the magnetizing current could saturate the transformer core, cause diode reverse recovery problem, and make the active clamp switch lose zero voltage turn-on if the bias is neat considered in the transformer design. This paper derives the explicit equation of the de bias of the magnetizing current for the first time and provides the transformer design procedures according to the derived equations.

引用

页码：553 / 559

页数：3