| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-phase claw tooth type permanent magnet motor provided with a consequent-pole type rotator, capable of reducing cogging torque without impairing cost efficiency. SOLUTION: This multi-phase claw tooth type permanent magnet motor is provided with a rotator 3 constituted by mounting permanent magnets 8, 17 with same poles at regular intervals in the circumferential direction on the outer circumferential portion of a rotator core 7. Magnet pole surfaces 14F of claw magnet poles 14 facing the rotator 3 composing a stator 4 are formed in trapezoidal shapes of which top ends in the axial direction becomes narrower. Forming the magnet pole surfaces 14F of the stator into trapezoidal shapes can alleviate an abrupt of magnetic energy toward the circumferential direction, thereby reducing cogging torque. COPYRIGHT: (C)2008,JPO&INPIT
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