| 摘要 |
PROBLEM TO BE SOLVED: To provide a permanent magnet motor for reducing the loss and heat due to eddy current. SOLUTION: A plurality of holes 12 are formed in a rotor member 10, and permanent magnets 14 separated in a circumferential direction are provided in the hole 12. Then, one permanent magnet 14 is made small, and a current path of eddy current is made narrow, so that the eddy current becomes small. Here, even as a total of permanent magnets 14, the eddy current becomes small in absolute term, and the eddy-current loss is reduced, resulting in less heat in a motor. In this case, the separated permanent magnets 14 may be joined partly, and several ferrite permanent magnets 14 may be used, or other permanent magnets may be made of rare-earth magnetic materials.
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