A Simple SVM Technique to Eliminate Common-mode Voltage for Matrix Converters

In a matrix-converter (MC) system, common-mode voltage (CMV) causes damage to the motor bearings and other equipment. When the MC is controlled by means of space vector modulation (SVM), zero-CMV can be achieved by using only rotating-vector states to drive the MC. However, as the computation becomes quite complicated, it is not easy to apply the rotating-vector states in practice. This paper presents a simple SVM technique using rotating-vector states to eliminate the CMV for MCs. Based on the conventional SVM method, the proposed SVM technique achieves the zero CMV for MCs within a few simple steps by considering the relationship between active-vector and rotating-vector states. The performance and effectiveness of the proposed technique are verified by simulation results.