Patent ID: 6798106
Filing Date: 2004-09-28
Classification: H02K

Abstract:
A vehicle ac generator including a field rotor having a plurality of claw-shaped magnetic pole pieces for alternately forming N and S poles in a circumferential direction, a stator having a stator core disposed opposite said rotor and a multi-phase stator winding mounted in plural slots formed in said stator core and a frame for supporting said rotor and said stator,wherein: said stator winding comprises at least two pairs of in-slot portions aligned in a depth direction of each of said slots and first and second coil-ends that respectively extend from opposite axial ends of said slots to be disposed thereon, said first coil-end comprises a plurality of crossover wires, each of which connects one of said in-slot portions disposed in one layer of first one of said slots and another of said in-slot portions disposed in another layer of second one of said slots that is spaced apart from said first one of said slots by a narrower pitch than a pole-pitch between said N and S poles; and said second coil-end comprises a plurality of crossover wires, each of which connects one of said in-slot portions disposed in one layer of third one of said slots and another of said in-slot portions disposed in another layer of fourth one of said slots that is spaced apart from said third one of said slots by the pole-pitch between said N and S poles.