Alternator with magnetic noise reduction mechanism

Details Alternator with magnetic noise reduction mechanism Alternator with magnetic noise reduction mechanism

1995-06-06

1997-11-25

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

310184, 310254, 310 68D, H02K 348, H02K 112

Patent

active

056915900

ABSTRACT:
In an alternator for a vehicle having a field coil for generating rotating magnetic field and stator coils for generating alternating current voltages in response to the rotating magnetic field, the stator coils are grouped and wound in a dual winding system. In order to reduce magnetic noise, a first group of coils are provided in contact with a stator core and the second group coils. The first and second group of coils are shifted from each other by .pi./3 radian in electrical angle.

REFERENCES:
patent: 4356419 (1982-10-01), Boer et al.
patent: 4419618 (1983-12-01), Gretsch
patent: 5013953 (1991-05-01), Odell
patent: 5122705 (1992-06-01), Kusase et al.
patent: 5214336 (1993-05-01), Schmidt et al.
patent: 5260620 (1993-11-01), Morrill
patent: 5343105 (1994-08-01), Sakabe et al.
patent: 5394041 (1995-02-01), Oberdorfer-Bogel
patent: 5502341 (1996-03-01), Sato

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