The invention relates to the technical field of hub motors, in particular to a yoke-free axial magnetic flux distributed hub driving system for an automobile, which comprises a driving motor, the driving motor comprises a stator assembly and a rotor assembly, the rotor assembly comprises a left rotor and a right rotor, and the left rotor and the right rotor both comprise rotor back iron and a plurality of magnetic poles. The magnetic poles comprise a first main magnetic pole, a middle magnetic pole and auxiliary magnetic poles, the first main magnetic pole and the middle magnetic pole are arranged from outside to inside along the radial direction, the middle magnetic pole comprises a second main magnetic pole and a soft magnetic pole which are axially superposed, the soft magnetic pole is connected to the rotor back iron, and the auxiliary magnetic poles are respectively arranged on two sides of the middle magnetic pole. The first main magnetic poles and the auxiliary magnetic poles are arranged from outside to inside in the radial direction, and the magnetizing directions of the first main magnetic poles, the second main magnetic poles and the auxiliary magnetic poles are all the axial directions. According to the structure, the driving motor has the characteristic of reverse salient poles, and the characteristic enables the motor to expand the current angle adjusting range in flux-weakening speed regulation control, so that the speed regulation range of the motor is improved.
本发明涉及轮毂电机技术领域,具体是一种汽车用无轭轴向磁通分布式轮毂驱动系统,包括驱动电机,驱动电机包括定子总成和转子总成,所述转子总成包括左转子和右转子,左转子和右转子均包括转子背铁及多个磁极,所述磁极包括第一主磁极、中间磁极及辅助磁极,第一主磁极及中间磁极沿径向由外向内排列,中间磁极包括轴向叠加的第二主磁极和软磁磁极,软磁磁极连接在转子背铁上,中间磁极的两侧分别设置有辅助磁极,第一主磁极与辅助磁极沿径向由外向内排列,所述第一主磁极、第二主磁极及辅助磁极的充磁方向均为轴向。上述结构使得本发明的驱动电机具有反凸极特性,该特性使电机在弱磁调速控制中可以扩大电流角调节范围,从而提高电机的调速范围。
Yoke-free axial magnetic flux distributed hub driving system for automobile
一种汽车用无轭轴向磁通分布式轮毂驱动系统
2023-10-13
Patent
Electronic Resource
Chinese
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