The Sparse Matrix Converter is an AC/AC converter which offers a reduced number of components, a low-complexity modulation scheme, and low realization effort.[1][2][3][4] Invented in 2001 by Prof Johann W. Kolar[5]
, sparse matrix converters avoid the multi step commutation procedure of the conventional matrix converter, improving system reliability in industrial operations. Its principal application is in highly compact integrated AC drives.
^J. W. Kolar, M. Baumann, F. Stögerer, F. Schafmeister, H. Ertl, “Novel Three-Phase AC-DC-AC Sparse Matrix Converter, Part I - Derivation, Basic Principle of Operation, Space Vector Modulation, Dimensioning, Part II - Experimental Analysis of the Very Sparse Matrix Converter“, in Proceedings of the 17th IEEE APEC’02, Dallas, USA, Vol. 2, pp. 777 – 791, March 10 – 14, 2002.
^L. Wei, T. A. Lipo, H. Chan, “Matrix Converter Topologies with Reduced Number of Switches“, in Proceedings of the VPEC’02, Blacksburg, USA, pp. 125 – 130, April 14 – 18, 2002.
^F. Schafmeister, “Sparse und Indirekte Matrix Konverter“, PhD thesis No. 17428, ETH Zürich, Switzerland, 2007.
^J. W. Kolar, F. Schafmeister, S. D. Round, and H. Ertl, “Novel Three-Phase AC-AC Sparse Matrix Converters“, Transactions Power Electronics, Vol. 22, No. 5, pp. 1649–1661, 2007.
^J. W. Kolar, „Vorrichtung Zur Quasi-Direkten Pulsbreitengesteuerten Energieumformung Zwischen Dreiphasennetzen“, Jul. 27, 2001, Austrian Patent Application (in German), filed
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