<p>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.</p>
申请公布号
CA2557084(C)
申请公布日期
2015.08.04
申请号
CA20062557084
申请日期
2006.08.24
申请人
GENERAL ELECTRIC COMPANY
发明人
MEYER, BRIAN NEDWARD;MELIUS, JEFFREY ALAN;HARBOURT, CYRUS DAVID;TSCHAPPATT, CHRISTOPHER L.;EDMUNDS, HOWARD ROSS;BONNEAU, WILLIAM JOHN;RIDENOUR, AMY MARLENE;WILKINSON, ANDREW SCOTT