Keywords: power quality, active wave shaping, power factor correction, direct torque control, permanent magnet synchronous motor, AC mains current, simulation, harmonic distortion, harmonics, PMSM
Active waveshaping of AC mains current in direct torque-controlled permanent magnet synchronous motor drive
This paper deals with the power quality improvement of AC mains in Direct Torque-Controlled (DTC) permanent magnet synchronous motor (PMSM) drive using active wave shaping techniques. For this purpose, different topologies for active wave shaping of AC mains current in DTC-based PMSM drive such as single- and two-switch boost power factor correction (PFC) AC–DC converter, asymmetrical two-switch boost PFC AC–DC converter and single-phase voltage source AC–DC converter (VSC) are considered. The models are developed and simulated in MATLAB environment along with the Power System Blockset (PSB) and Simulink toolboxes to compute the relevant power quality performance indices. The simulated results demonstrate the effectiveness of different topologies in improving the power quality of the input AC mains in DTC-based PMSM drive.