Patent ID: 6495941
Filing Date: 2002-12-17
Classification: F02N,H02K

Abstract:
A dynamo-electric machine comprising:a stator constructed by linking outer peripheral portions of a plurality of teeth arranged at equiangular pitches in a circumferential direction by an annular core back, and a plurality of coils wound around the teeth; and a rotor constructed by a plurality of magnetic poles composed of magnetic members arranged at equiangular pitches in the circumferential direction, the magnetic poles being formed into one piece by a base portion composed of a nonmagnetic member, and the rotor being rotatably disposed around an axis of the stator and adjacently to an inner periphery of the stator, wherein the plurality of coils are composed of a plurality of first coils that are excited by alternating current and a plurality of second coils that are excited by direct current, with one coil being wound around each tooth without involving any other teeth, and wherein the first coils and the second coils are alternately disposed in a circumferential direction.