发明授权
US07576466B2 Electric motor with minimized cogging and related method of determining stator pole geometry 有权
具有最小化齿槽的电动机和确定定子极几何形状的相关方法

  • 专利标题: Electric motor with minimized cogging and related method of determining stator pole geometry
  • 专利标题(中): 具有最小化齿槽的电动机和确定定子极几何形状的相关方法
  • 申请号: US11411136
    申请日: 2006-04-26
  • 公开(公告)号: US07576466B2
    公开(公告)日: 2009-08-18
  • 发明人: Shinji MakitaMasayuki Nashiki
  • 申请人: Shinji MakitaMasayuki Nashiki
  • 申请人地址: JP Kariya
  • 专利权人: Denso Corporation
  • 当前专利权人: Denso Corporation
  • 当前专利权人地址: JP Kariya
  • 代理机构: Oliff & Berridge, PLC
  • 优先权: JP2005-131813 20050428
  • 主分类号: H02K1/00
  • IPC分类号: H02K1/00
Electric motor with minimized cogging and related method of determining stator pole geometry
摘要:
An electric motor with reduced cogging torque and related method of determining a stator pole geometry are disclosed. The electric motor includes a rotor (80, 91, 96) and a stator (50A, 50B, 50C, 50D, 60A, 60B, 60C, 60D, 70A, 90B, 94B, 98) having a stator pole geometry incorporating non-magnetic body segments (110) and magnetic body segments (100) as magnetic reluctance equalizing elements to provide an equalized magnetic body distribution along a circumferential periphery of the stator. The method comprises defining a first group of stator poles skewed at an electric angle of 360/(2S), defining a second group of stator poles deviated from the first group of stator poles by an electric angle of 180 degrees, and synthesizing the first and second groups of stator poles pieces to provide a stator including a plurality of stator poles defined in the stator pole geometry to have an equalized magnetic flux distribution pattern along a circumferential periphery of the stator.
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