发明名称 |
Permanent magnet rotor type electric motor with different permanent magnet materials |
摘要 |
In an electric motor, such as a DC brushless motor or the like, having a permanent magnet in a rotor, each magnetic pole is formed of three permanent magnets, and the permanent magnets are made of at least two kinds of magnetic materials represented by ferrite magnet and rare-earth magnet. Thus, in a permanent magnet rotor type electric motor, a reluctance torque and a magnetic flux density can be selectively established, and cost is reasonable, corresponding to the quality.
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申请公布号 |
US6025667(A) |
申请公布日期 |
2000.02.15 |
申请号 |
US19980159668 |
申请日期 |
1998.09.24 |
申请人 |
FUJITSU GENERAL LIMITED |
发明人 |
NARITA, KENJI;SUZUKI, TAKASHI;OKUDERA, HIROYUKI;KAWAI, YUJI;SOUMA, YUJI;KAWANISHI, KOJI;FUKUDA, YOSHICHIKA |
分类号 |
H02K21/14;H02K1/27;H02K15/03;(IPC1-7):H02K1/27 |
主分类号 |
H02K21/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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