Charging dynamoelectric machine having reduced noise output

Details Charging dynamoelectric machine having reduced noise output Charging dynamoelectric machine having reduced noise output

1985-04-18

1986-09-30

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310 42, 310 51, H02K 316, H02K 524

Patent

active

046148892

ABSTRACT:
A charging dynamoelectric machine having a reduced electromagnetically induced noise component, particularly, at the mechanical resonant frequency of the rotor thereof. In accordance with the invention, a pair of magnetic poles, each having a plurality of magnetic pole members extending from a respective yoke, are press fitted onto a rotary shaft with a field winding frame positioned between the yokes. A preload is applied between the yokes and the field winding frame on an exterior and peripheral portion thereof. The preload may be applied by tapering the base walls of the yoke or field winding frame, or by providing projections on the interior surfaces of the base portions of the yokes or on the outer opposed surfaces of the field winding frame.

REFERENCES:
patent: 3230404 (1966-01-01), Graham
patent: 3252025 (1966-05-01), Brown et al.
patent: 3859548 (1975-01-01), Morley et al.
patent: 4339873 (1982-07-01), Kanamaru et al.
patent: 4374337 (1983-02-01), Kohzai et al.

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