US 6,661,146 B2 · Automotive alternator

Abstract

A stator has a stator core provided with slots formed at a ratio of two per phase per pole and a stator winding composed of an a-phase, a d-phase, a c-phase, an f-phase, a b-phase, and an e-phase winding phase portions mounted to the stator core, wherein a′-phase winding phase portion is constructed by connecting the a-phase winding phase portion and the d-phase winding phase portion in series by a first interphase crossover portion, a b′-phase winding phase portion is constructed by connecting the b-phase winding phase portion and the e-phase winding phase portion in series by a second interphase crossover portion, and a c′-phase winding phase portion is constructed by connecting the c-phase winding phase portion and the f-phase winding phase portion in series by a third interphase crossover portion, the interphase crossover portions being arranged so as to be offset in a circumferential direction.

Claims18

Dependent claims

An automotive alternator comprising:

a stator having:
an annular stator core in which slots are disposed at a ratio of two per phase per pole;
and
a stator winding mounted to said stator core,
wherein said stator winding is provided with six winding phase portions each installed in a slot group including every sixth slot of said slots such that each of said slot groups is successively offset by one slot,
each pair of said six winding phase portions having a phase difference corresponding to an electrical angle of approximately 30 degrees is connected by an interphase crossover portion, and
said interphase crossover portions are arranged so as to be separated in an axial direction from coil ends of said stator winding and so as to be offset in a circumferential direction so as not to overlap each other in a radial direction.

4 more elements

Dependencies are inferred from the claim text.

Automotive alternator

Life of this patent

Automotive alternator

Life of this patent

Abstract

Claims18