Research and Simulation of DTC Based on SVPWM of PMSM

Abstract Abstract: In order to solve the problem of the flux linkage and the torque ripple in conventional direct torque control(DTC) for permanent magnet synchronous motor (PMSM), a new method which combines space vector pulse width modulation(SVPWM) with direct torque control is proposed where the hysteresis controllers and the switch table in conventional DTC system are replaced by SVPWM. Through the simulation with MATLAB, the theoretical analyses and simulation results indicate that the proposed control method can reduce the flux linkage and torque ripple in a large extent and have a better dynamic and static performance.