MODULATION AND CONTROL TECHNIQUES OF MATRIX CONVERTER

The Matrix converter is a forced commutated Cyclo-converter with an array of controlled semi conductor switches that connects directly the three phase source to the three phase load. The matrix converter is a direct AC-AC Converter. It has no limit on output frequency due to the fact that it uses semiconductor switches with controlled turn-off capability. The simultaneous commutation of controlled bidirectional switches limits the practical implementation and negatively affected the interest in matrix converters. This major problem has been solved with the development of several multi-step commutation strategies that allow safe operation of the switches Examples of these semiconductor switches include the IGBT, MOSFET, and MCT. Some of the modulation techniques existing are Basic, Alesina-Venturi and Space vector Modulation Techniques. Out of the above modulation techniques Space vector Modulation Technique is most widely used. The simulation of matrix converter modulation and control strategies of Space vector Modulation Technique is done by using MATLAB-Simulink.