Invention Grant
- Patent Title: Rotor for axial gap-type permanent magnetic rotating machine
- Patent Title (中): 转子用于轴向间隙式永磁旋转机
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Application No.: US12889849Application Date: 2010-09-24
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Publication No.: US08823235B2Publication Date: 2014-09-02
- Inventor: Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
- Applicant: Naoki Watanabe , Yuhito Doi , Takehisa Minowa , Hajime Nakamura , Koichi Hirota
- Applicant Address: JP Tokyo
- Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee: Shin-Etsu Chemical Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Westerman, Hattori, Daniels & Adrian, LLP
- Priority: JP2009-229617 20091001
- Main IPC: H02K1/27
- IPC: H02K1/27

Abstract:
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.
Public/Granted literature
- US20110080065A1 ROTOR FOR AXIAL GAP-TYPE PERMANENT MAGNETIC ROTATING MACHINE Public/Granted day:2011-04-07
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