Direct torque control space vector modulation of five-phase interior permanent magnet synchronous motor using matrix converter

Abstract

Matrix converters (MCs) have many advantages over conventional inverters such as sinusoidal input and output waveforms, operation with close to unity input power factor and more compact sizes. Direct torque control (DTC) is known as one of the popular methods in controlling AC motor drives. This paper presents indirect space vector modulation (ISVM) approach as a new modulation method for a three-to-five-phase MC and calculates the maximum modulation index of this converter based on a mathematical solution. Then, new DTC-SVM is proposed for a five-phase interior permanent magnet synchronous motor, fed by a three-to-five-phase MC. The simulation results show that the proposed drive system has very low flux and torque ripples, sinusoidal input and output currents, constant switching frequency, operation with close to unity input power factor and regenerative braking capability.