Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
William John Bonneau0
Cyrus David Harbourt0
Howard Ross Edmunds0
Jeffrey Alan Melius0
Amy Marlene Ridenour0
Andrew Scott Wilkinson0
Brian Nedward Meyer0
Christopher L. Tschappatt0
Date of Patent
June 22, 2010
0Patent Application Number
112234730
Date Filed
September 9, 2005
0Patent Primary Examiner
Patent abstract
A method for controlling a pitch control system of a wind turbine includes providing a charged backup battery configured to supply no energy to a DC link when full AC input power is available, wherein the DC link includes a DC link capacitor. The method further includes using energy stored in the DC link capacitor to operate a pitch control system during a loss or dip of AC input power, and maintaining charge on the DC link capacitor using the charged backup battery as voltage across the DC link capacitor drops during the operation of the pitch control system.
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