Patent ID: 7015614

Claim:
A synchronous reluctance motor comprising: a stator ( 11 ) having a predetermined number of toothed stator magnetic pole portions ( 11 A) wound by armature coils, and a rotor ( 12 ) rotatably supported at an inner peripheral surface of the stator and having a plurality of outer side slots ( 12 b ) and a plurality of inner side slots ( 12 c ), both the outer ide slots and the inner side slots arranged in a circumferential direction of the rotor to extend along the inner periphery of the stator with a predetermined interval and to extend toward the outer periphery of the rotor, and each of the outer side slots and each of the inner side slots are arranged in the radial direction of the rotor, and an outer side permanent magnet ( 13 a ) disposed in each of the outer side slots and an inner side permanent magnet ( 13 b ) disposed in each of the inner side slots, the inner side permanent magnet and the outer side permanent magnet facing each other in the radial direction and the inner side permanent magnet having a magnetic pole different from a magnetic pole of the outer side permanent magnet, and, wherein a first total magnetic flux amount of the outer side permanent magnet is determined to be larger than a second total magnetic flux amount of the inner side permanent magnet when a center-line of both the outer side slot and the inner side slot in the circumferential direction of the rotor is located in a center-line of one of the stator magnetic pole portions in a circumferential direction of the stator, and when the armature coils winding around the stator magnetic pole portions are not electrically fed.