Patent ID: 7067949

Claim:
A rotary electric machine comprising: a stator having: an annular stator core in which two slots are disposed per phase per pole; and a three-phase stator winding mounted to said stator core; and a rotor rotatably disposed inside said stator for generating a magnetic flux by means of a field winding and a permanent magnet, wherein: said three-phase stator winding comprises a plurality of winding phase sub-portions each comprising six wave winding sub-portions, wherein each wave winding sub-portion comprises a single conductor wire installed in a slot group constituted by every sixth slot of said slots and each winding phase sub-portion is formed by connecting ends of the conductor wires; an X-phase winding phase portion, a Y-phase winding phase portion, and a Z-phase winding phase portion constituting said three-phase stator winding are each constructed by connecting in series pairs of said winding phase sub-portions installed in an adjacent pair of said slot groups; and said slots are formed at a nonuniform pitch in which an angle between center lines of slot opening portions alternates between an electrical angle of α and (60°−α), where α does not equal 30 degrees.