US 11,719,225 B2
Method for setting a pitch angle of a rotor blade, control device for setting a pitch angle, and associated wind turbine
Ulf Schaper, Staffhorst (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Filed by Wobben Properties Gmbh, Aurich (DE)
Filed on Dec. 4, 2020, as Appl. No. 17/112,677.
Claims priority of application No. 10 2019 135 550.8 (DE), filed on Dec. 20, 2019.
Prior Publication US 2021/0190036 A1, Jun. 24, 2021
Int. Cl. F03D 7/04 (2006.01); F03D 7/02 (2006.01)
CPC F03D 7/0224 (2013.01) [F03D 7/042 (2013.01); F05B 2270/32 (2013.01); F05B 2270/327 (2013.01); F05B 2270/328 (2013.01); F05B 2270/331 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method comprising:
setting a pitch angle of a rotor blade of a rotor of a wind turbine, wherein the rotor blade is configured to move rotationally about a rotor blade longitudinal axis for setting the pitch angle by a pitch drive, wherein the setting comprises:
determining an aerodynamic power of the rotor;
establishing a nominal pitch angle as a function of the aerodynamic power; and
setting the pitch angle to the established nominal pitch angle,
wherein the nominal pitch angle is established based on an aerodynamic power factor depicted in a portionally linear control function, wherein portions of the portionally linear control function are defined by the aerodynamic power, and the aerodynamic power factor is a power-dependent additional blade angle.