AC generator having claw-pole rotor

Details AC generator having claw-pole rotor AC generator having claw-pole rotor

1999-06-30

2000-10-03

LaBalle, Clayton

Electrical generator or motor structure

Dynamoelectric

Rotary

310254, H02K 1922

Patent

active

061277630

ABSTRACT:
An alternator for vehicle includes a stator and a rotor. The stator is composed of a stator core which is a lamination of steel-sheets and stator winding. The rotor is composed of a pole core, a pair of cooling-fans disposed on opposite axial ends of the pole core and a field coil. The pole core is composed of a cylindrical center core, a pair of disk yokes extending from the center core and claw-pole-pieces extending from the disk yokes to longitudinally cover the field coil. In such a generator, a ratio Y/X of a circumferential distance Y between the adjacent claw-pole-pieces to a circumferential width X of the tooth edges and a ratio r1/R1 of the inside diameter r1 of a cylindrical space where the claw-pole-pieces are disposed to the outside diameter R1 of the same are in specific ranges.

REFERENCES:
patent: 4201930 (1980-05-01), Inagaki et al.
patent: 4263526 (1981-04-01), Taguchi et al.
patent: 4418295 (1983-11-01), Shiga
patent: 5122705 (1992-06-01), Kusase et al.
patent: 5233255 (1993-08-01), Kusumoto et al.
patent: 5343105 (1994-08-01), Sakabe et al.

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