反向弧转子齿转矩脉动抑制

Reverse Arc Rotor Tooth Torque Pulsation Suppression

磁通切换电机由于其独特的双凸极结构,导致其具有比其它永磁电机更大的转矩脉动。本文根据气隙磁场调制原理,通过调整转子齿型来调整转子调制函数,削弱高频谐波分量,进而降低转矩脉动。提出了一种反向弧转子齿来抑制电磁转矩脉动和齿槽转矩,进而降低输出转矩脉动。对一种双凸极结构的强聚磁磁通切换电机进行反向弧转子齿设计,以调节转子调制函数。经过有限元仿真分析,反向弧转子结构可以有效地去除气隙中的高次谐波,降低电磁转矩脉动和齿槽转矩,使电机易于起动,降低了电机运行时的转矩脉动。

The flux-switching permanent machine has a larger torque pulsation than other permanent magnet motors due to its unique biconvex pole structure.In this paper,according to the principle of breath magnetic field modulation,the rotor modulation function was adjusted by adjusting the rotor tooth shape to weaken the high-frequency harmonic components and thus reduce the torque pulsation.A reverse arc rotor tooth was proposed to suppress the electromagnetic torque pulsation and cogging torque,and thus reduce the output torque pulsation.The reverse arc rotor teeth were designed for a strongly polymagnetic flux-switching permanent machine with a biconvex pole structure to modulate the rotor modulation function.After finite element simulation analysis,the reverse arc rotor structure can effectively remove the high harmonics in the air gap,reduce the electromagnetic torque pulsation and cogging torque,make the motor easy to start,and reduce the torque pulsation during motor operation.