Electricity: single generator systems – Generator control
Reexamination Certificate
2011-01-04
2011-01-04
Gonzalez, Julio (Department: 2839)
Electricity: single generator systems
Generator control
C322S089000
Reexamination Certificate
active
07863868
ABSTRACT:
A generator system is configured to supply two phase excitation current from an exciter rotor to a main generator rotor. When driven by a variable speed prime mover, the generator system provides relatively constant frequency AC power by independently controlling the main rotor flux rotational speed. The generator system includes an exciter stator that induces current in the exciter rotor windings at a desired frequency and phasing. The exciter rotor windings are electrically connected to the main rotor windings to provide two-phase excitation current to the main rotor windings. Excitation is supplied to the exciter stator from an exciter controller, which controls the frequency and phasing of the exciter excitation, based on the rotational speed of the generator, to maintain a constant output frequency. The exciter frequency control function of the exciter controller may be eliminated when the generator system is driven by a constant speed prime mover or when a narrow band variable frequency output is required.
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Anghel Cristian E.
Pearson Wayne T.
Xu Mingzhou
Caglar Esq. Oral
Gonzalez Julio
Honeywell International , Inc.
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