A novel soft-switching high-frequency transformer isolated three-phase AC-to-DC converter with low harmonic distortion

Author

Hamdad, Fatemeh-Soheila ; Bhat, Ashoka K S

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Victoria, BC, Canada

Volume

19

Issue

1

fYear

2004

Firstpage

35

Lastpage

45

Abstract

A high-frequency transformer isolated, fixed-frequency, 3-φ single-stage ac-to-dc converter using a boost-integrated bridge converter that employs a new gating scheme is proposed. This converter enjoys natural power factor correction with low line current harmonic distortion and symmetric high frequency voltage and current waveforms while ensuring zero-voltage switching for all the switches for a wide variation in load and line voltage. Various operating modes of the converter are presented and analyzed. Based on the analysis, design curves are obtained and an optimum design is given. A design example is presented. Results obtained from SPICE simulation and a 500 W output experimental prototype are given to verify the performance of the proposed converter for varying load as well as line voltage.

Keywords

AC-DC power convertors; SPICE; harmonic distortion; high-frequency transformers; power factor correction; switching convertors; 500 W; SPICE simulation; ac-to-dc converter; boost integrated bridge converter; high frequency transformer; line voltage; load voltage; low harmonic distortion; power factor correction; zero-voltage switching; Bridge circuits; Frequency conversion; Hafnium; Harmonic distortion; Power factor correction; Reactive power; Resonance; Switches; Switching converters; Zero voltage switching;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2003.820568

Filename

1262051