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Grid Connected Quasi-Z-Source Direct Matrix Converter
39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 (2013)
  • Omar Ellabban, Dr., Helwan University
  • Haitham Abu-Rub, Prof.
Abstract

This paper proposes a new three-phase ac-ac converter topology based on the Z-source concept and the conventional direct matrix converter (DMC), it is called quasi-Z-Source direct matrix converter (QZSDMC). It could provide buck-boost function and make the role of frequency changer. Compared with the traditional ac-dc-ac converter, it uses fewer devices and realizes direct ac-ac power conversion, so as to have higher efficiency and better circuit characteristics. Compared with the traditional direct matrix converter, it provides wider voltage regulation range and improves input-output voltage transformation ratio. The proposed converter is tested as a grid connected converter for interfacing renewable energy sources. The circuit topology, operating principle, control method and simulation results are given to verify the feasibility of the proposed converter.

Keywords
  • Z-source converter (ZSC); Quasi-Z-source converter (QZSC); Quasi-Z-source direct matrix converter (QZSDMC).
Publication Date
November 10, 2013
Publisher Statement
IEEE
Citation Information
Omar Ellabban and Haitham Abu-Rub. "Grid Connected Quasi-Z-Source Direct Matrix Converter" 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013 (2013)
Available at: http://works.bepress.com/omar_ellabban/31/