Matrix Converter for Six Phase Induction Machine Drive System

ABSTRACT In this paper, a novel vector controlled sixphase induction machine which is fed from six-phase matrix converter is proposed. Though the practical implementation of matrix converter to vector controlled three phase induction motors is limited and still under investigation due to switches devices implementation difficulties and complication of modulation technique and commutation control, but all research works published so far agreed that the performances of three phase induction motors supplied from matrix converters are superior to that obtained using conventional pulse width modulation controlled inverter. Owing to that, we propose in the present work via simulation the application of six phase matrix converter for the supply of vector controlled six phase induction machines. The paper discusses all components used in the simulation, namely the vector control law, six phase matrix converter as well as the mathematical model of a six phase induction machine with electrical angle between any two three phase stator winding equal to 60 electrical degrees. A scalar modulation scheme with three intervals which ensures high performance and meets desired requirements is used for the control of matrix converter. Simulation results obtained are very satisfactory and demonstrate the possibility of using vector control of six-phase induction machine fed from a sixphase matrix converter. We believe that simulation results obtained will be of great benefit for the future practical investigations.