Patent ID: 8633629

Claim:
A dynamoelectric machine comprising: a rotor that is rotatably supported by a housing; and a stator comprising: a stator core in which slots are formed at a ratio of two slots per phase per pole; and a stator winding that is constituted by six phase windings that are mounted into wave windings in said stator core, said stator being supported by said housing so as to surround said rotor, wherein: three phase windings among said six phase windings are given a phase difference corresponding to an electrical angle of π/3 from each other by being mounted into said stator core so as to be stacked sequentially in a radial direction so as to be offset by two slots each in a first circumferential direction to configure a first phase winding group; a remaining three phase windings of said six phase windings are given a phase difference corresponding to an electrical angle of π/3 from each other by being mounted into said stator core so as to be stacked sequentially in a radial direction on a radially outer side of said first phase winding group so as to be offset respectively by one slot in said first circumferential direction relative to each of said three phase windings that constitute said first phase winding group to configure a second phase winding group; and each of said six phase windings is configured such that a conductor wire is mounted so as to alternate repeatedly between a 5π/6 short-pitch winding and a 7π/6 long-pitch winding.