US 11,852,120 B2
Method of adjusting at least one rotor blade of a wind turbine and a system and a wind turbine for carrying out the method
Ulf Schaper, Staffhorst (DE); Lukas Wernicke, Kiel (DE); and Kai-Uwe Wegner, Wittmund (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Filed by Wobben Properties GmbH, Aurich (DE)
Filed on Dec. 7, 2021, as Appl. No. 17/544,468.
Claims priority of application No. 20212514 (EP), filed on Dec. 8, 2020.
Prior Publication US 2022/0178348 A1, Jun. 9, 2022
Int. Cl. F03D 7/02 (2006.01)
CPC F03D 7/0276 (2013.01) [F05B 2220/706 (2013.01); F05B 2270/32 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); F05B 2270/808 (2013.01); F05B 2270/8041 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of adjusting a rotor blade of a wind turbine, the method comprising:
receiving a command for adjusting the rotor blade to an adjustment speed,
determining a current moment of inertia of the rotor blade,
accelerating the rotor blade until reaching the adjustment speed, wherein the accelerating is limited in dependence on the current moment of inertia, and
determining a current deflection of the rotor blade, and wherein determining the current moment of inertia comprises determining the current moment of inertia in dependence on the determined current deflection of the rotor blade.