Electricity: single generator systems – Automatic control of generator or driving means – Plural conditions
Patent
1994-07-27
1996-08-27
Dougherty, Thomas M.
Electricity: single generator systems
Automatic control of generator or driving means
Plural conditions
322 17, H02P 900
Patent
active
055504566
ABSTRACT:
A control scheme for a wound rotor synchronous generator whereby feedback signals corresponding to the exciter field current and the generator output voltage potential combine together to control the generator output voltage in such a way that at lower generator speeds and lower load requirements, exciter field current saturation is eliminated by reducing generator output voltage. The generator control scheme includes a circuit for sensing exciter field current in logic cooperation with a circuit for sensing generator voltage. Both sensing circuits regulate the current applied to the exciter field which corresponds to the rectified current applied to the field windings of the power generator. During steady state operations the generator output voltage is regulated using the generator output voltage as a feedback signal. At lower speeds and reduced loads and as the exciter field current approaches the saturation point, the generator output voltage is regulated using the exciter field current as a feedback signal.
REFERENCES:
patent: 4262242 (1981-04-01), Glennon
patent: 4467267 (1984-08-01), Hucker et al.
patent: 5254935 (1993-10-01), Vercesi et al.
patent: 5285147 (1994-02-01), Rashid
patent: 5325043 (1994-06-01), Parro
Hodge David
Liebermann Eli
Scherzinger William M.
Shekhawat Sampat
Silvestro Gayton L.
Allied-Signal Inc.
Dougherty Thomas M.
Kreger, Jr. Verne E.
Ponomarenko Nicholas
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