公开(公告)号：US20140217847A1

公开(公告)日：2014-08-07

申请号：US14172023

申请日：2014-02-04

Applicant: Johnson Electric S.A.

Inventor： Wai Lun Allan KWAN ,  Jie CHAI ,  Tao ZHANG ,  Jingping TAO

IPC: H02K1/27

CPC classification number: H02K1/2793 ,  H02K1/2786 ,  H02K29/03

Abstract: A brushless permanent magnet electric motor (10) configured to have high saliency and low cogging torque, comprises a stator (30) having a plurality of stator teeth (36), and a rotor (50) having a permanent magnet (56) having a plurality of magnetic poles. The stator teeth (36) contain pole heads (37) having grooves (39) substantially parallel to the axial direction of the motor (10) formed thereon, which function to increase the number of magnetic stator poles of the motor (10), increasing saliency. The permanent magnet (56) contains a plurality of notches (58) on one side positioned between the plurality of magnetic poles, configured to decrease the coefficient of pole arc of the rotor (50), thereby decreasing cogging torque.

Abstract translation: 具有高凸度和低齿槽转矩的无刷永磁电动机（10）包括具有多个定子齿（36）的定子（30）和具有永磁体（56）的转子（50） 多个磁极。 定子齿（36）包括具有大致平行于形成在其上的电动机（10）的轴向方向的槽（39）的极头（37），其功能是增加电动机（10）的磁性定子极数，增加 显着性 永磁体（56）在位于多个磁极之间的一侧上包含多个切口（58），其构造为降低转子（50）的极弧系数，从而减小齿槽转矩。