Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1984-12-03
1986-04-08
Skudy, R.
Electrical generator or motor structure
Dynamoelectric
Rotary
310219, 310256, H02K 3100
Patent
active
045815550
ABSTRACT:
A drum-type homopolar dynamoelectric machine includes a rotor and an annular field coil encircling a portion of the rotor. The field coil is supported by a stator structure having a main pole piece for directing magnetic flux produced by current flowing in the coil, radially into a section of the rotor. A current transfer assembly makes sliding electrical contact with a current collecting zone on the surface of the rotor and is axially positioned between the main pole piece and an end pole piece of the stator which directs magnetic flux axially out of the end of the rotor. A magnetic flux shield is positioned adjacent to the field coil to minimize leakage flux, caused by current flowing in the field coil, in the vicinity of the current collecting zone of the rotor. This reduces undesirable circulating currents in the rotor current collecting zone and the associated current collecting brushes.
REFERENCES:
patent: 2134510 (1938-11-01), Hague
patent: 3539852 (1970-11-01), Appleton et al.
patent: 3639793 (1972-02-01), Appleton et al.
patent: 4110648 (1978-08-01), Stillwagon
patent: 4151455 (1979-04-01), Janotik
patent: 4271369 (1981-06-01), Stillwagon
patent: 4385251 (1983-05-01), Mallick et al.
patent: 4401986 (1983-08-01), Trenkler
Kilgore Lee A.
Kuznetsov Stephen B.
Lenart R. P.
Skudy R.
Westinghouse Electric Corp.
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