Flat frequency, constant voltage power source device

Details Flat frequency, constant voltage power source device Flat frequency, constant voltage power source device

1989-06-13

1990-10-23

Smith, Jr., David

Electrical transmission or interconnection systems

Plural supply circuits or sources

Connecting or disconnecting

318102, 322 16, 307 84, H02P 900

Patent

active

049654632

ABSTRACT:
A flat frequency, constant voltage power source device is provided for parallel operation of a plurality of electric generators. The generators include exciting windings of induction motors integral with the generators for connecting and disconnecting outputs of the generators. A starting sequence of the electric generators is based on a start signal provided externally and start preparation completion signals indicating completion of start preparation routines. The induction motors of the generators are thereby varied in frequency so that the generators can be synchronized in phase for their effective parallel operation.

REFERENCES:
patent: 2320875 (1943-01-01), Liwschitz
patent: 3753002 (1973-08-01), Jacobson et al.
patent: 4575671 (1986-03-01), Lee et al.
patent: 4628246 (1986-12-01), Dronen

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