Characterization of an active clamp flyback topology for power factor correction applications

Author

Watson, Robert ; Hua, Guichao C. ; Lee, Fred C.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

11

Issue

1

fYear

1996

fDate

1/1/1996 12:00:00 AM

Firstpage

191

Lastpage

198

Abstract

Flyback derived power convertor topologies have long been attractive because of their relative simplicity when compared with other topologies used in low-power applications. Incorporation of active clamp circuitry provides the additional benefit of recycling transformer leakage energy while minimizing switch voltage stress. This paper presents the analysis, design, and experimental results of 500 W single stage and 600 W interleaved active clamp flybacks used for power factor correction. Several practical issues, including the application of charge control, the use of mixed power devices, and a solution to the hold-up time problem are discussed and experimentally verified

Keywords

DC-DC power convertors; field effect transistor switches; network topology; power MOSFET; power factor correction; power field effect transistors; power semiconductor switches; power transformers; switching circuits; 500 W; 600 W; DC/DC; active clamp flyback topology; applications; charge control; flyback power convertor; hold-up time problem; mixed power devices; power factor correction; switch voltage stress; transformer leakage energy recycling; Circuit topology; Clamps; Flyback transformers; Inductance; Power factor correction; Recycling; Stress; Switches; Switching circuits; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.484432

Filename

484432