| 摘要 |
A permanent magnet embedded motor including a rotor which is provided with a plurality of slits and a plurality of permanent magnets embedded into the slits and a stator which is provided with an iron core having a plurality of slots to which a coil is wound and is arranged to face the rotor via a gap. The slit includes a permanent magnet embedded part into which the permanent magnet is embedded in a direction perpendicular to the radial direction of the rotor and an "L"-shaped air gap part integrally provided on both ends of the permanent magnet embedded part. An angle "theta 1 " for one pole of the rotor and an angle "theta 2 " of the "L"-shaped air gap part are set to be 0.1<=theta 2/theta1 <=0.3. Further, a radius "R" of a circumscribed circle of the rotor and a radius "R 1 " for forming an outer peripheral face of the rotor at a portion of the "L"-shaped air gap part are preferably set to be 0.1<=(R-R 1 )/R<=0.3.
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