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:
Sep. 09, 2008
Filed:
Jan. 31, 2006
Haiqing Weng, Shanghai, CN;
Robert A. Seymour, Roanoke, VA (US);
John D. D'atre, Salem, VA (US);
Allen M. Ritter, Roanoke, VA (US);
Xiaoming Yuan, Shanghai, CN;
Renchang Dai, Shanghai, CN;
Robert W. Delmerico, Clifton Park, NY (US);
Haiqing Weng, Shanghai, CN;
Robert A. Seymour, Roanoke, VA (US);
John D. D'Atre, Salem, VA (US);
Allen M. Ritter, Roanoke, VA (US);
Xiaoming Yuan, Shanghai, CN;
Renchang Dai, Shanghai, CN;
Robert W. Delmerico, Clifton Park, NY (US);
General Electric Company, Schenectady, NY (US);
Abstract
Method and apparatus that provide a response to the negative sequence current demands during a disturbance of the grid system connected to power-generating equipment, such as a wind turbine system, provide for tracking components in the grid signal, orienting at least a portion of the signal, and injecting the oriented portion. Controlled injection of negative sequence current provides for extending small-signal control response, and also provides for modifications of the apparent impedance to the grid interconnect of the power conversion equipment.