Single-phase Z-source cycloconverter with safe-commutation strategy

Author

Nguyen, Minh-Khai ; Jung, Young-Gook ; Yang, Hung-Yu ; Lim, Young-Cheol

Author_Institution

Dept. of Electr. Eng., Chonnam Nat. Univ., Gwangju, South Korea

Volume

3

Issue

2

fYear

2010

fDate

3/1/2010 12:00:00 AM

Firstpage

232

Lastpage

242

Abstract

A new single-phase to single-phase Z-source cycloconverter (SPZC) based on single-phase matrix converter (SPMC) topology is proposed. The proposed SPZC can boost to a desired voltage with various frequencies, in which output frequency is an integer fraction of input frequency. Thus, it is also called a frequency step-down and amplitude voltage step-up converter. A safe-commutation strategy is employed to eliminate voltage spikes on switches, and the operating principle and analysis of the SPZC are presented. To verify the successful operation of the proposed topology, a DSP TMS320F2812 based prototype is implemented, and the results of PSIM simulations and experiments are also presented.

Keywords

commutation; cycloconvertors; frequency convertors; matrix convertors; power supply quality; switching convertors; amplitude voltage step-up converter; frequency step-down converter; integer fraction; safe-commutation strategy; single-phase matrix converter topology; single-phase z-source cycloconverter; switches; voltage spike elimination;

fLanguage

English

Journal_Title

Power Electronics, IET

Publisher

iet

ISSN

1755-4535

Type

jour

DOI

10.1049/iet-pel.2008.0131

Filename

5420055