Electricity: single generator systems – Automatic control of generator or driving means – Plural conditions
Patent
1988-12-29
1990-06-12
Salce, Patrick R.
Electricity: single generator systems
Automatic control of generator or driving means
Plural conditions
322 27, 363 16, H02P 930
Patent
active
049336231
ABSTRACT:
A generator voltage regulator circuit is provided with a switching circuit for alternatively connecting or disconnecting a generator exciter field winding to a DC power source. A discharge circuit is provided for conducting current, produced by a collapsing magnetic field in the exciter winding following disconnection of the winding by the switching circuit, in a revese direction through the DC power source. A driving circuit controls the switching circuit with a series of turn-on pulses. Each of the turn-on pulses is initiated in response to a transition in a clock signal and is terminated alternatively when the current in the exciter field winding reaches a predetermined magnitude or when a second transition occurs in the clock signal. This invention also encompasses a method of regulating exciter field current performed by this circuit.
REFERENCES:
patent: 4032835 (1977-06-01), Finnell et al.
patent: 4044296 (1977-08-01), Dhyanchand et al.
patent: 4264856 (1981-04-01), Frierdich et al.
patent: 4346337 (1982-08-01), Watrous
patent: 4446417 (1984-05-01), Fox et al.
patent: 4585986 (1986-04-01), Dyer
Lenart R. P.
Peckman Kristine
Salce Patrick R.
Westinghouse Electric Corp.
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