Homopolar dynamoelectric machine with an auxiliary field coil

Details Homopolar dynamoelectric machine with an auxiliary field coil Homopolar dynamoelectric machine with an auxiliary field coil

1984-12-03

1986-07-22

Skudy, R.

Electrical generator or motor structure

Dynamoelectric

Rotary

310219, 310249, 310256, H02K 3100

Patent

active

046021795

ABSTRACT:
A drum type homopolar dynamoelectric machine includes a rotor, a main field coil and an auxiliary field coil. The field coils encircle different portions of the rotor and are supported by a stator structure having a main pole piece for directing magnetic flux produced by current flowing in the main field 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 which is axially positioned between the main and auxiliary field coils. Current flowing in the auxiliary field coil tends to reduce the amount of leakage flux in the current collecting zone produced by current flowing in the main field coil. This reduces undesirable circulating currents in the rotor current collecting zone and the associated current collecting structures.

REFERENCES:
patent: 3229133 (1966-01-01), Sears
patent: 3736450 (1973-05-01), Emaldi
patent: 4271369 (1981-06-01), Stillwagon
patent: 4499392 (1985-02-01), Giacoletto
patent: 4521709 (1985-06-01), Saint-Michel

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