Investigation of performance parameters of PMSM drives using DTC-SVPWM technique

The direct torque control space vector pulse width modulation (DTC-SVPWM) theory has achieved great success in the speed control of PMSM drives. A DTC-SVPWM technique of PMSM has been presented in this paper. Based on in-depth analysis of PMSM mathematical model in a-b-c frame and α-β frame are established and the operation principle of DTC-SVPWM system, the relationships between the torque and fundamental components. A novel SVPWM technique which has a feature of low harmonic is proposed. The proposed technique is adopted to design the DTC-SVPWM of a three-phase PMSM drives. A large number of simulation results show that the DTC-SVPWM technique of PMSM drives having good dynamic performance. Aiming at the DTC-SVPWM technique in PMSM drives, in this paper explained the theoretical basis of the DTC for PMSM firstly, and then explained the difference between the applications of DTC-SVPWM to PMSM drives. Finally the MATLAB/Simulink models were developed to examine the DTC-SVPWM for PMSM drives for enhancement of performance parameters of such motors. This article is very useful for researchers and scientific engineers for extending the research work in this area.