- 专利标题: Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine
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申请号: US12176024申请日: 2008-07-18
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公开(公告)号: US07667365B2公开(公告)日: 2010-02-23
- 发明人: Fumio Tajima , Yutaka Matsunobu , Shouichi Kawamata , Suetaro Shibukawa , Osamu Koizumi , Keiji Oda
- 申请人: Fumio Tajima , Yutaka Matsunobu , Shouichi Kawamata , Suetaro Shibukawa , Osamu Koizumi , Keiji Oda
- 申请人地址: JP Tokyo JP Hitachinaka-shi
- 专利权人: Hitachi, Ltd.,Hitachi Car Engineering Co., Ltd.
- 当前专利权人: Hitachi, Ltd.,Hitachi Car Engineering Co., Ltd.
- 当前专利权人地址: JP Tokyo JP Hitachinaka-shi
- 代理机构: Crowell & Moring LLP
- 优先权: JP8-275826 19961018
- 主分类号: H02K1/27
- IPC分类号: H02K1/27
摘要:
A magnetic gap is provided between a permanent magnet of a rotor and an auxiliary magnet pole portion which is arranged adjacent to the permanent magnet in a peripheral direction. A gradual change in a magnetic flux density distribution of a surface of the rotor is obtained and a cogging torque and a torque pulsation are restrained. By obtaining a reluctance torque according to the auxiliary magnetic pole, a permanent magnet electric rotating machine in which the cogging torque and the torque pulsation are restrained can be obtained and further an electromotive vehicle having the permanent magnet electric rotating machine can be provided.
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