A Visualization of Switching Patterns and Characteristic Verification to Reduce Input Current Distortion for Matrix Converter

Abstract

This paper proposed a space vector modulation method to reduce the input current harmonics of a matrix converter. In the proposed method, the input current harmonics were defined in order to evaluate the input current THD of each modulation rate, power factor and phase of the input and output. Switching patterns minimizing the input current harmonics and distribution of the input current harmonics were shown by visualizing in the space vector. The proposed space vector modulation method clarified the effectiveness of the input current harmonics reduction by simulations and showed the 40-point reduction of the input current THD as compared with the conventional method.