SIMULATION AND ANALYSIS OF MATRIX CONVERTER

Abstract

Power electronics is an emerging technology. New power circuits are invented and have to be introduced into the power electronics curriculum. One of the interesting new circuits is the matrix converter. The matrix converter is an array of controlled semiconductor switches that connects directly the three-phase source to the three-phase load without using any DC link or large energy storage elements, and therefore it is called the all-silicon solution. This converter has several attractive features such as: sinusoidal input and output currents, operation with unity power factor for any load, regeneration capability. In the last few years, an increase in research work has been observed, bringing this topology closer to the industrial application. There are various control strategies used for matrix converter like venturini modulation method, space vector modulation scheme and indirect modulation method. In this thesis the 3-phase to 3-phase matrix converter is implemented using venturini modulation method. A Simulation model of 3-phase to 3-phase matrix converter is developed in MATLAB simulink. A prototype model of 3-phase to 3-phase Matrix converter is designed and developed in the laboratory for experimentation purpose. Both simulation and experimental results are presented. Venturini control scheme is implemented through programming. The complete program has been explained through flow charts and implemented on Pentium MMX Processor based PC using interfacing cards. The program is written in 'C-Language'.