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    • 2. 发明申请
    • ROTARY PERMANENT MAGNET ELECTRIC MOTOR HAVING STATOR POLE SHOES OF VARYING DIMENSIONS
    • 旋转永磁电机具有变化尺寸的定位器
    • WO2003105317A1
    • 2003-12-18
    • PCT/US2003/008672
    • 2003-03-28
    • WAVECREST LABORATORIES LLCMASLOV, Boris, A.SOGHOMONIAN, Zareh, Salmasi
    • MASLOV, Boris, A.SOGHOMONIAN, Zareh, Salmasi
    • H02K21/12
    • H02K1/141H02K1/2786H02K21/22H02K29/03H02K2201/12H02K2201/15
    • Rotary permanent magnet motors have salient stator poles with non-uniform pole thickness in the radial direction for compensating effects of cogging torque. Pole base portions terminate at pole shoes at the radial air gap. The pole shoes extend in the circumferential direction from the bulkier base portions. Variation of the thickness of the pole shoe changes the concentration of the effective flux at the point of coupling between the stator poles and the permanent magnet pole shoes. As there is no change in the active interfacing area of the pole shoes a uniform air gap is maintained. The torque signature for each stator pole/rotor permanent magnet interface can be selectively changed to smooth motor operation by configuring the stator pole shoe thickness to vary along its circumferential extent as appropriate. Pole shoes may have tapered leading or trailing edges with respect to a pole base to change the effective flux density in the air gap at a specific pitch of rotation. Additionally, the pole shoe may be shifted off center with respect to the pole base.
    • 旋转永磁电机具有在径向方向上具有不均匀极厚度的凸极定子极,用于补偿齿槽转矩的影响。 极基部分在径向气隙处终止于极靴。 极靴从较大的基部向圆周方向延伸。 极靴厚度的变化会改变定子极与永磁铁杆之间的耦合点处的有效通量的浓度。 由于极靴的主动接口区域没有变化,因此保持均匀的气隙。 可以选择性地改变每个定子极/转子永磁体接口的扭矩特征,以便通过使定子极靴厚度在其圆周范围内适当地变化来平滑电机操作。 杆鞋可以相对于杆座具有锥形的前缘或后缘,以在特定的旋转间距改变气隙中的有效通量密度。 此外,极靴可以相对于杆座偏离中心。