A Fixed-Frequency Soft-Switched Interleaved 3-Phase AC-to-DC Converter


Y. Du and A.K.S. Bhat




This paper proposes a three-phase interleaved highfrequency transformer isolated ac-dc converter that is suitable for small scale wind energy conversion systems employing permanent magnet synchronous generators. This configuration is realized by interleaving three identical single-phase singlestage ac-dc converters obtained by integrating a rectifier, boost converter and fixed-frequency dual-tank LCL resonant converters. Based on a design example used for illustration
purpose, a converter is designed and PSIM simulation results are presented for various operating conditions, such as balanced and unbalanced 3-phase operation; two-phase operation. It is shown
that the converter maintains soft switching fore wide variation in supply voltage with low THD with high power factor.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ, Nº. 15)
Pages: 417-422 Date of Publication: 2017/04/25
ISSN: 2172-038X Date of Current Version:
REF: 338-17 Issue Date: April 2017
DOI:10.24084/repqj15.338 Publisher: EA4EPQ

Authors and affiliations

Y. Du(2) and A.K.S. Bhat(1)
1. Department of Electrical and Computer Engineering. University of Victoria (Canada)
2. Is now with Rinte pipe Ecomaterial Co., Ltd., Chang Zhou, China

Key word

Interleaved, soft-switched, PMSG, power factor correction, ac-to-dc.


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