Soft-Switching Technique for a Three-Phase Isolated Matrix Rectifier

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Primary Lin_Xuerui_201806_MSc.pdf (3.11 MB)

DOI

https://doi.org/10.7939/R3HD7P824

Date

2018-11

Author

Lin, Xuerui

Institution

http://id.loc.gov/authorities/names/n79058482

Degree Level

Master's

Degree

Master of Science

Department

Department of Electrical and Computer Engineering

Specialization

Energy systems

Supervisor / Co-Supervisor and Their Department(s)

Li, Yunwei (Ryan) (Electrical and Computer Engineering)

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Abstract

Matrix converters (MC) have attracted more attention recently in high-power applications. Matrix converters can perform direct AC to AC electrical power conversion without DC-link capacitors, which reduce the size of the converter. Matrix rectifiers (MR) inherit all the advantages of traditional matrix converters and are promising in AC-DC applications such as telecommunication systems, front-end power converters for high-voltage direct current (HVDC), and aircraft systems. In this thesis, a novel ZVS operation method for a three-phase isolated matrix- type rectifier is proposed. The presented pulse width modulation (PWM) scheme removed two hard-switch actions and realized ZVS for all twelve MOSFET devices. The ZVS operation of MOSFET switches is analyzed and operating states during switch transitions is discussed. The operation principle of the converter is addressed. The comparison between the proposed PWM and existing 8-segment PWM and 6-segment PWM is presented to show the differences. The effectiveness of ZVS operation of the proposed PWM scheme is verified by both simulation and experimental results.

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http://purl.org/coar/resource_type/c_46ec

Title

Soft-Switching Technique for a Three-Phase Isolated Matrix Rectifier

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Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.

Subject/Keywords

Soft-Switching
Space Vector Modulation
Zero-Voltage-Switching
Matrix Rectifier

Language

en

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