An improvement of direct torque controlled PMSM drive using PWM technique and kalman filter

Dung Quang Nguyen (Ton Duc Thang University)
Hau Huu Vo (Ton Duc Thang University)
Pavel Brandstetter (VSB-Technical University of Ostrava)

Bulletin of Electrical Engineering and Informatics
Vol 12, No 4: August 2023

The paper describes pulse-width-modulation (PWM) technique and Kalman filter (KF) process to improve performance of direct torque controlled permanent magnet synchronous motor (DTC-PMSM) drive. Performance of DTC methods are strongly affected by high stator current ripple. For lowering the ripple, high switching frequency space vector PWM and KF are utilized in the paper. Mathematical model of PMSM and calculations of important quantities of DTC applied to PMSM drive are presented in the first part. The second part shows computation process of space vector PWM and KF. Performance indices are utilized to evaluate the drive structures. Theorectical assumptions are validated via simulations with Gaussian noised stator current measurement.