Performance Improvements for Matrix Converter Based on Reverse Blocking IGBT

In this paper, researches on performance improvements of matrix converter based on reverse blocking IGBT are carried out in terms of PWM strategy, commutation technique and short-circuit protection. An optimization method of space vector PWM for matrix converter is proposed to minimize the distortion of output voltage and current. Commutation technique improvements by using a two-step commutation method are discussed deeply through power loss comparison and output waveform quality comparison. A short-circuit fault protection circuit is proposed to limit the peak values of power device voltage and current during short-circuit intervals. Simulation and experiments demonstrate the feasibility and effectiveness of these proposed methods