Soft-switching single-stage AC-to-DC converter with low harmonic distortion

Author

Venkatraman, R. ; Bhat, A.K.S. ; Edmunds, Mark

Author_Institution

Adv. Transformer Co., Rosemont, IL, USA

Volume

36

Issue

4

fYear

2000

fDate

10/1/2000 12:00:00 AM

Firstpage

1190

Lastpage

1203

Abstract

A 1 φ high-frequency (HF) transformer isolated, soft-switching single-stage ac-dc converter with low line-current harmonic distortion is presented. Its operation is explained with equivalent circuits for the various intervals. The converter is analyzed and design curves are obtained. An optimization parameter is introduced and a systematic design procedure is illustrated with a design example. Detailed SPICE simulation and experimental results of a 500 W converter with load as well as line voltage variation are given to verify theory. The proposed converter employs a zero-voltage transition (ZVT) network to ensure zero-voltage switching (ZVS) at all loads, and natural power factor correction is ensured using a simple control circuit.

Keywords

AC-DC power convertors; SPICE; circuit CAD; circuit optimisation; equivalent circuits; harmonic distortion; 500 W converter; HF transformer; SPICE simulation; ac-dc converter; design; design curves; equivalent circuits; harmonic distortion; line voltage variation; natural power factor correction; optimization; soft-switching AC-to-DC converter; zero-voltage switching; zero-voltage transition; AC-DC power converters; Circuit simulation; Design optimization; Equivalent circuits; Hafnium; Harmonic distortion; Power factor correction; SPICE; Switching converters; Zero voltage switching;

fLanguage

English

Journal_Title

Aerospace and Electronic Systems, IEEE Transactions on

Publisher

ieee

ISSN

0018-9251

Type

jour

DOI

10.1109/7.892668

Filename

892668