Abstract: 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 “?1” for one pole of the rotor and an angle “?2” of the “L”-shaped air gap part are set to be 0.1??2/?1?0.3. Further, a radius “R” of a circumscribed circle of the rotor and a radius “R1” 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?R1)/R?0.3.

Abstract: 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 “&thgr;1” for one pole of the rotor and an angle “&thgr;2” of the “L”-shaped air gap part are set to be 0.1≦&thgr;2/&thgr;1≦0.3. Further, a radius “R” of a circumscribed circle of the rotor and a radius “R1” 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−R1)/R≦0.3.

Abstract: An armature of an electric rotating machine includes an armature core provided with plural divided cores arranged in a circumferential direction. A salient pole is provided in each of the plural divided cores. A coil winding is wound around each salient pole. A convex winding configuration of the coil winding is formed so as to project on an adjacent salient pole side over a boundary line between adjacent divided cores. A concave winding configuration of the coil winding is formed so as to be hollow from the boundary line so as not to interfere with the convex winding configuration.