US 12,066,004 B2
Rotor blade, wind turbine, serration angle, environmental parameters
Ralf Messing, Aurich (DE); and Jochen Stemberg, Aurich (DE)
Assigned to Wobben Properties GmbH, Aurich (DE)
Filed by Wobben Properties GmbH, Aurich (DE)
Filed on Feb. 15, 2023, as Appl. No. 18/169,616.
Claims priority of application No. 22156881 (EP), filed on Feb. 15, 2022.
Prior Publication US 2023/0258151 A1, Aug. 17, 2023
Int. Cl. F03D 1/06 (2006.01)
CPC F03D 1/0675 (2013.01) [F05B 2240/2211 (2013.01); F05B 2240/3042 (2020.08); F05B 2240/3052 (2020.08); F05B 2250/411 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A rotor blade of a wind turbine comprising:
a rotor blade body having a leading edge and a trailing edge, the rotor blade body extending in a longitudinal direction between a root end and a tip end,
wherein a cross section of rotor blade body between the leading edge and the trailing edge defines a profile chord,
wherein the rotor blade has a plurality of serrations formed by teeth of a trailing edge ridge of the rotor blade,
wherein each serration of the plurality of serrations has a base line arranged at the trailing edge, and an end point, which is located furthest away from the base line, which together span a plane of the serration,
wherein an angle between the plane of at least one serration of the plurality of serrations and the profile chord is formed dependent on at least one environmental parameter at an installation location of the wind turbine, and
wherein the angle between the plane of the at least one serration of the plurality of serrations and the profile chord is increased in the direction of a pressure side of the rotor blade as the air density decreases thereby adjusting an induction factor distribution of the rotor blade according to deviations of the at least one environmental parameter at the installation location from at least one design parameter of the rotor blade.