Self-excited dynamo-electric machines with improved start-up cha

Details Self-excited dynamo-electric machines with improved start-up cha Self-excited dynamo-electric machines with improved start-up cha

1979-01-26

1980-09-09

Hickey, Robert J.

Electricity: single generator systems

Generator control

With excitation winding and/or circuit control

322 81, H02P 930

Patent

active

042220017

ABSTRACT:
In known generators and motors a regulator circuit connected in series with the exciter winding creates too much resistance to allow self-excitation to start at very low speeds. The regulator circuit is therefore shunted by a positive temperature coefficient resistor. This has very low resistance at low temperatures causing sufficient current flow through the exciter winding even at low speeds.

REFERENCES:
patent: 3152298 (1964-10-01), Byles
patent: 3217229 (1965-11-01), Ballard
patent: 3378753 (1968-04-01), Poppinger et al.
patent: 3599080 (1971-08-01), Bennett
patent: 3611112 (1971-10-01), Lehinoff

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