| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a permanent magnet motor where demagnetization and magnetization of a permanent magnet with a small coercive force have little effect on magnetic flux between a plurality of split cores of a rotor. <P>SOLUTION: A permanent magnet motor has a rotor that includes a plurality of split cores arranged circumferentially and formed into an approximately annular shape. Each of the split cores has a plurality of magnet insertion slots into which permanent magnets are inserted so as to form magnetic poles. The rotor is rotatable relative to a stator. Permanent magnets with a relatively large coercive force are inserted into the magnet insertion slots located near boundaries among the split cores, and at least one permanent magnet with a relatively small coercive force is inserted into the magnet insertion slot located elsewhere than near the boundaries. <P>COPYRIGHT: (C)2012,JPO&INPIT |
