Electricity: measuring and testing – Fault detecting in electric circuits and of electric components – Of ground fault indication
Reexamination Certificate
2006-12-08
2008-08-12
Gutierrez, Diego (Department: 2831)
Electricity: measuring and testing
Fault detecting in electric circuits and of electric components
Of ground fault indication
C324S701000, C324S500000
Reexamination Certificate
active
07411404
ABSTRACT:
A system, apparatus, and method (10) for detecting an electrical short condition in a dynamoelectric machine are described. The method includes determining an operating parameter of a dynamoelectric machine (14) responsive to at least one output signal of the dynamoelectric machine and providing a transfer function (16) for predicting a field current of dynamoelectric machine. The method also includes obtaining a value for a predicted field current (18) of the dynamoelectric machine from the transfer function and the operating parameter and identifying a shorted turn condition of the dynamoelectric machine responsive to a difference between the value of the predicted field current and a value of an actual field current of the dynamoelectric machine (24).
REFERENCES:
patent: 4164705 (1979-08-01), Whitney et al.
patent: 5477163 (1995-12-01), Kliman
patent: 5825597 (1998-10-01), Young
patent: 6064172 (2000-05-01), Kuznetsov
patent: 6483319 (2002-11-01), Kendig et al.
patent: 6798210 (2004-09-01), Goodrich et al.
patent: 6882173 (2005-04-01), Nelson et al.
patent: 6911838 (2005-06-01), Rao et al.
patent: 6979975 (2005-12-01), Kinpara et al.
patent: 2004/0189279 (2004-09-01), Rao et al.
patent: 2005/0068058 (2005-03-01), Nelson et al.
patent: 2005/0218907 (2005-10-01), Lee et al.
The New Method On Rotor Winding Inter Turn Short-Circuit Fault Measure of Turbine Generator, Li Yonggang; Zhao Hua; Li Heming; Electric Matchines and Drives Conference, 2003. IEMDC'03. IEEE International, vol. 3, Jun. 1-4, 2003; pp. 1483-1487 vol. 3.
The Diagnosis Method of Generator Rotor Winding Inter Tum Short Circuit Fault Based On Excitation Current Harmonics, Wan Shuting; Li Heming; Li Yonggang; Wang Yi; Power Electronics and Drive Systems, 2003. PEDS 2003. The Fifth International Conf on vol. 2, Nov. 17-20, 2003, pp. 1669-1673, vol. 2.
Inter Turn Short Circuit Fault Research on Generator Rotor Windings, Li Yonggang; Li Heming; Zhu Ling; Zhao Hua; Electrical Machines and SYstems, 2001. ICEMS 2001. Proceedings of the Fifth International Conference on vol. 1, Aug. 18-20, 2001, pp. 357-360, vol. 1.
Agosti Ann M.
Baldridge Benjamin M
General Electric Company
Gutierrez Diego
LandOfFree
Apparatus, system, and method for detecting an electrical... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus, system, and method for detecting an electrical..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus, system, and method for detecting an electrical... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3996178