永磁同步电机磁通谐波抑制的补偿控制仿真

Simulation on Flux Harmonic Compensation Control of Permanent Magnet Synchronous Motor

摘要:

在电动汽车中对电机的运行效率和性能有着严格的要求。永磁同步电机的转子永磁体励磁磁场中含有的谐波成分，将增加定子绕组内磁链的谐波成分，增大电机的损耗，导致电机温度升高，同时产生转矩波动。本文提出一种对磁通谐波抑制的补偿控制算法，通过减少定子铁损，同时对电机因磁场谐波引起的转矩波动进行补偿，从而减小振动和噪声。仿真表明该补偿控制算法使得磁通谐波含量明显降低，转矩波动减小，提高了电机运行的效率和性能。

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.