The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2001
Filed:
Dec. 13, 1999
Lawrence B. Farr, Asheville, NC (US);
Irving A. Gibbs, Fletcher, NC (US);
Charles A. Morse, Arden, NC (US);
Charles R. Mummert, Hendersonville, NC (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An excitation control system for a generator includes an SCR bridge for providing an excitation voltage to the input of the generator; a regulator for regulating the excitation voltage; and a sensing sub-system for providing an electrical signal, such a generator current or generator watts, which is related to the output of the generator. The generator includes a circuit breaker for the one or more alternating current phases output by the generator. An output of the circuit breaker has a signal with a true state when the circuit breaker is closed and the generator is on-line and with a false state when the circuit breaker is open and the generator is off-line. A comparator provides a validation signal when the generator electrical signal is greater than a predetermined signal, such as minimum generator current or minimum generator watts, respectively. An OR gate qualifies the signal of the output of the circuit breaker with the validation signal and provides a qualified signal therefrom. Trip and protection logic employs the qualified signal for protecting or tripping the generator.