发明授权
- 专利标题: Rotor for axial gap-type permanent magnetic rotating machine
- 专利标题(中): 转子用于轴向间隙式永磁旋转机
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申请号: US12889849申请日: 2010-09-24
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公开(公告)号: US08823235B2公开(公告)日: 2014-09-02
- 发明人: Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
- 申请人: Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
- 申请人地址: JP Tokyo
- 专利权人: Shin-Etsu Chemical Co., Ltd.
- 当前专利权人: Shin-Etsu Chemical Co., Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Westerman, Hattori, Daniels & Adrian, LLP
- 优先权: JP2009-229617 20091001
- 主分类号: H02K1/27
- IPC分类号: H02K1/27
摘要:
An axial gap-type permanent magnetic rotating machine comprises a rotor comprising a rotating shaft having an axis of rotation, a rotor yoke of disc shape radially extending from the shaft, and a plurality of permanent magnet segments circumferentially arranged on a surface of the rotor yoke such that each permanent magnet segment may have a magnetization direction parallel to the axis of rotation, and a stator having a plurality of circumferentially arranged coils and disposed to define an axial gap with the rotor. In the rotor, each permanent magnet segment is an assembly of two or more divided permanent magnet pieces, and the coercive force near the surface of the magnet piece is higher than that in the interior of the magnet piece.