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:
Oct. 24, 2006
Filed:
Mar. 15, 2005
Cyrus David Harbourt, Roanoke, VA (US);
Jeffrey Alan Melius, Roanoke, VA (US);
Amy Marlene Ridenour, Salem, VA (US);
David Gerard Wanner, Jr., Roanoke, VA (US);
Howard Ross Edmunds, Roanoke, VA (US);
Andrew Scott Wilkinson, Roanoke, VA (US);
Cyrus David Harbourt, Roanoke, VA (US);
Jeffrey Alan Melius, Roanoke, VA (US);
Amy Marlene Ridenour, Salem, VA (US);
David Gerard Wanner, Jr., Roanoke, VA (US);
Howard Ross Edmunds, Roanoke, VA (US);
Andrew Scott Wilkinson, Roanoke, VA (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for powering a pitch motor drive system for at least one DC pitch motor of a wind turbine includes rectifying a voltage using a bridge circuit to thereby supply a DC link voltage to a bridge comprising active switching devices, and utilizing at least one link capacitor to smooth the DC link voltage and act as an energy sink and source for the DC pitch motor or motors.