Method and apparatus for damping oscillations of an ac generator

Details Method and apparatus for damping oscillations of an ac generator Method and apparatus for damping oscillations of an ac generator

1988-06-10

1989-08-08

Hickey, R. J.

Electricity: single generator systems

Automatic control of generator or driving means

Antihunting or rate of change

322 25, 322 58, H02H 706, H02P 900

Patent

active

048556645

ABSTRACT:
A scheme for stabilizing a synchronous alternating current generator through the excitation control to dampen generator oscillations includes a power system stabilizer responsive to signals representing the generator output voltage and output current to provide an oscillation signal which represents the instantaneous magnitude of the generator oscillations. A modulator means is included which develops a signal, representing the generator voltage with respect to neutral, and this latter signal is multiplied by the oscillation signal to provide a control signal which controls the excitation of the generator.

REFERENCES:
patent: 4125884 (1978-11-01), Sun
patent: 4329637 (1982-05-01), Kotake et al.
patent: 4393345 (1983-07-01), Fork et al.
patent: 4463306 (1984-07-01), deMello et al.
patent: 4701689 (1987-10-01), Yuan et al.
patent: 4741023 (1988-04-01), Lawson
F. E. Terman-"Radio Engineering", McGraw-Hill, 1947, pp. 467-483.
F. E. Terman-"Radio Engineers Handbook", McGraw-Hill, 1943, pp. 531-553.
Graeme, Tobey, Huelsman-"Operational Amplifiers", McGraw-Hill 1971, Lib. Congress Cat. Card No. 74-163297, pp. 397, 398, 426.

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