Simulation Study on the Effect of Voltage Vector on Torque in Direct Torque Control System of Permanent Magnet Synchronous Motor

Abstract

An improved direct torque control (DTC) scheme based on the effect of voltage vector on torque for permanent magnet synchronous motor (PMSM) is proposed in this paper, which can increase useful voltage vectors in a sector to 6. Simulation results show that can lower unreasonable torque ripple effectively.