Enhancing the efficiency of a dual three-phase permanent magnet synchronous motor with modified switching table for direct torque control

Labchir, Fouad
Afia, Aziz El
Benkirane, Karim
Khafallah, Mohamed

International Journal of Power Electronics and Drive Systems (IJPEDS)
Vol 15, No 3: September 2024

Conventional direct torque control (DTC) can be served to drive a dual three-phase permanent magnet synchronous motor (DTP-PMSM) by controlling the torque and speed. It relies on the direct application of controlled sequences through the use of a combination of dual hysteresis controllers with a transitioning table. In the course of conventional DTC implementation, there's generation of high armature current with lower-level harmonics, leading to increased losses that affect the machine's effectiveness. To enable a diminishment in these harmonics and consequently enhance the motor's efficiency, an approach to modify the conventional DTC is proposed. Specifically, this strategy involves adapting a new distribution of sectors and substituting the elements of the obtained switching table with synthetic elements. Simulated data validate the effectiveness of the chosen methodology.