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:
Nov. 25, 2008
Filed:
Jan. 10, 2006
Haiqing Weng, Shanghai, CN;
John D. D'atre, Salem, VA (US);
Robert A. Seymour, Roanoke, 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;
John D. D'Atre, Salem, VA (US);
Robert A. Seymour, Roanoke, 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
An apparatus for rapidly tracking fundamental frequency information in the signal of an electric grid is a cross-coupled phase-lock loop filter (CCPLL) that includes the use of a phase-lock-loop (PLL) apparatus having a plurality individual filters, wherein an input for a first filter in the plurality of individual filters comprises the signal of the electric grid and an output signal from at least a second filter in the plurality of individual filters. A method for using the CCPLL includes applying a signal to the CCPLL and monitoring the output of the CCPLL. Use of the CCPLL may be accomplished or modeled via computer instructions stored on machine readable media.