Simulation on Flux Harmonic Compensation Control of Permanent Magnet Synchronous Motor

Abstract:

There are strict requirements on operating efficiency and performance for motor in electric vehicle. Harmonics in permanent magnet excitation magnetic field of permanent magnet synchronous motor (PMSM) can increase the harmonic components in the stator winding flux link and increase losses in the motor, which will lead to motor temperature increasing and torque fluctuation. This paper proposes a compensation of harmonic suppression control algorithm to reduce vibration and noise by reducing the stator iron loss and compensating motor torque fluctuation due to magnetic field harmonics. Simulations results show that the magnetic flux compensation control algorithm reduces harmonic content significantly, decreases torque ripple, and improves the motor’s efficiency and performance.