The invention provides a motor, an electric power steering system and a vehicle, the motor comprises a stator iron core, a rotor iron core and an air gap, the rotor iron core is arranged in the stator iron core, and the air gap is located between the rotor iron core and the stator iron core. Wherein the axial height Ls of the stator iron core, the outer diameter Dso of the stator iron core, the stator split ratio k of the stator iron core, the axial height Lr of the rotor iron core and the width lg of the air gap meet the following conditions: the size relation of the stator iron core, the rotor iron core and the air gap between the stator iron core and the rotor iron core is optimized, so that the size of the stator iron core and the rotor iron core is reduced under the condition of not increasing parts; the motor can effectively solve the problem that the performance of the motor is reduced due to the magnetic leakage at the end part of the motor, thereby reducing the cogging torque, suppressing the torque pulsation, improving the average torque of the motor, improving the vibration noise of the motor, guaranteeing the performance of the motor, reducing the weight of the motor to the greatest extent, and reducing the production cost.
本发明提供了一种电机、电动助力转向系统和车辆,电机包括定子铁芯、转子铁芯和气隙,转子铁芯设在定子铁芯的内部,气隙位于转子铁芯和定子铁芯之间。其中,定子铁芯的轴向高度Ls、定子铁芯的外径Dso、定子铁芯的定子裂比k、转子铁芯的轴向高度Lr、气隙的宽度lg满足:本申请通过对定子铁芯、转子铁芯和二者之间的气隙的尺寸关系进行优化,在不增加零部件的情况下,能够有效解决电机端部漏磁造成的电机性能下降的问题,从而降低齿槽转矩,抑制转矩脉动,提高电机的平均转矩,改善电机的振动噪声,在保证电机性能的同时,能够最大程度地减少电机的重量,并降低生产成本。
Motor, electric power steering system and vehicle
电机、电动助力转向系统和车辆
2023-06-06
Patent
Electronic Resource
Chinese
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