发明授权
US5825116A AC generator for vehicle having combined structure of field coil and
permanent magnet
失效
交流发电机,具有励磁线圈和永磁体的组合结构
- 专利标题: AC generator for vehicle having combined structure of field coil and permanent magnet
- 专利标题(中): 交流发电机,具有励磁线圈和永磁体的组合结构
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申请号: US740667申请日: 1996-10-31
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公开(公告)号: US5825116A公开(公告)日: 1998-10-20
- 发明人: Hiroaki Ishikawa
- 申请人: Hiroaki Ishikawa
- 申请人地址: JPX Kariya
- 专利权人: Denso Corporation
- 当前专利权人: Denso Corporation
- 当前专利权人地址: JPX Kariya
- 优先权: JPX7-286057 19951102
- 主分类号: H02K1/22
- IPC分类号: H02K1/22 ; H02K21/04 ; H02K21/16 ; H02K19/22
摘要:
An AC generator has a rotor with permanent magnets disposed between claw poles. The rotor has Lundell-type pole cores having a boss portion where a field coil is wound and claw poles. The permanent magnets are sintered ferrite magnets and disposed between opposite side surfaces of the adjacent claw poles and magnetized to have the same magnetic pole as the claw pole adjacent thereto. A ratio between the cross-sectional area per pole of the magnetic path of the boss portion and peripheral surface area of the claw poles facing the teeth of the stator core is designed to be between 70% to 120%.
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