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Single-Phase Trans-Z-Source AC-AC Converter

Hyunhak Shin, Minjae Joung

2016/5/20

Abstract

The existing Z-source or qZ-source PWM AC-AC converters have limited voltage gain because of the equivalent series resistance in the Z-source inductor. In order to obtain higher voltage gain than (q)Z-source AC-AC converters, a coupled inductor(or transformer) based Z-source AC-AC
converter is proposed in this paper. By increasing turns ratio of the coupled inductor more than 1, the proposed converter can obtain higher output voltage than (q)Z-source converters with the same duty ratio. A 120 W prototype AC-AC converter isbuilt and tested to verify performances of the proposed converter.

Published in: Renewable Energy & Power Quality Journal (RE&PQJ),Vol. 1, Nº. 14
Pages:639-643 Date of Publication: 2016/5/20
ISSN: 2172-038X Date of Current Version:2016/5/4
REF:416-16 Issue Date: May 2016
DOI:10.24084/repqj14.416 Publisher: EA4EPQ

Authors and affiliations

Hyunhak Shin, Minjae Joung
Gyeongbuk Institute for Advancement of Eco-friendly Auto parts Technology (GBITECH). Korea

Key words

AC-AC Conversion, Z-source, Coupled inductor, high voltage gain

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