Patent ID: 6979927

Claim:
An automotive alternating-current dynamoelectric machine comprising: a stator having: an annular stator core in which slots are disposed at a ratio of two slots 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, wherein: 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 first and second stator winding phase sub-portions installed in an adjacent pair of slot groups, said slots being formed at a nonuniform pitch in which an angle between center lines of slot opening portions alternates between an electrical angle of α and an electrical angle of (60°−α), where α does not equal 30 degrees.