Common mode voltage in DTC drives using matrix converters

Abstract

The paper analyzes the common mode voltage at the output of matrix converters. Based on the theoretical analysis, an approach to reduce the common mode voltage for direct torque control drives using matrix converter is then proposed. The proposed method can be easily implemented without increasing computational requirements and it has been shown to achieve a reduction of 42% in the peak value of the common mode voltage. The functionality of the proposed method is validated by experimental results and compared to the conventional direct torque control.