发明授权
- 专利标题: Synchronous motor having magnetic poles of permanent magnet and magnetic poles of a soft magnetic material
- 专利标题(中): 具有永磁体的磁极和软磁性材料的磁极的同步电动机
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申请号: US409597申请日: 1995-03-24
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公开(公告)号: US5631512A公开(公告)日: 1997-05-20
- 发明人: Yasutomo Kawabata , Tetsuya Miura
- 申请人: Yasutomo Kawabata , Tetsuya Miura
- 申请人地址: JPX Toyota
- 专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人: Toyota Jidosha Kabushiki Kaisha
- 当前专利权人地址: JPX Toyota
- 优先权: JPX6-075121 19940413; JPX7-014614 19950131
- 主分类号: H02K1/27
- IPC分类号: H02K1/27 ; H02K21/14 ; H02K21/12
摘要:
Hard magnetic poles made of a permanent magnet and soft magnetic poles are alternately disposed on the periphery of a cylindrical rotor of a permanent magnet type synchronous motor. The arcuate length of the hard magnetic poles is equal to that of the intervals between the hard magnetic poles, thereby enabling an increase in the ratio of reluctance torque. Therefore, the number of permanent magnets used can be reduced, making production economical, and a back electromotive force can also be lowered. Further, one magnetic pole consists of six slots, and the arcuate length of hard and soft magnetic poles corresponds to a 3-slot pitch, thereby enabling a reduction in cogging torque.
公开/授权文献
- US5087342A Continuous steel strand electrolytic processing 公开/授权日:1992-02-11