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:
Feb. 27, 2018
Filed:
Jun. 04, 2015
Applicant:
General Electric Company, Schenectady, NY (US);
Inventor:
Sreedhar Desabhatla, Munich, DE;
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02P 9/10 (2006.01); G05F 1/66 (2006.01); H02J 3/18 (2006.01); H02K 11/00 (2016.01);
U.S. Cl.
CPC ...
H02P 9/10 (2013.01); G05F 1/66 (2013.01); H02J 3/1885 (2013.01); H02K 11/00 (2013.01);
Abstract
A method keeps a synchronous machine in a stable operating zone during large transient voltage excursions on a power grid to which the machine is connected. The machine's load angle, i.e., the position of the rotor flux with respect to the position of the stator flux, is calculated. If the load angle is not within a defined range of reference values for stable machine operation, the machine's field excitation is adjusted to bring the machine's load angle within the defined range of reference values for stable machine operation.