H - Electricity – 02 – J
Patent
H - Electricity
02
J
H02J 9/00 (2006.01) F03D 7/00 (2006.01) H02K 7/14 (2006.01)
Patent
CA 2557084
A method for controlling a pitch control system (406) of a wind turbine (100) includes providing a charged backup battery (408) configured to supply no energy to a DC link (410) when full AC input power is available, wherein the DC link includes a DC link capacitor (416). 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.
Bonneau William John
Edmunds Howard Ross
Harbourt Cyrus David
Melius Jeffrey Alan
Meyer Brian Nedward
Company General Electric
Craig Wilson And Company
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