US 12,253,065 B2
Method for controlling a wind power installation so as to protect birds and bats
Annika Länger-Möller, Aurich (DE); and Fabian Lorenz, Magdeburg (DE)
Assigned to WOBBEN PROPERTIES GMBH, Aurich (DE)
Filed by Wobben Properties GmbH, Aurich (DE)
Filed on Jun. 22, 2023, as Appl. No. 18/339,692.
Claims priority of application No. 22180715 (EP), filed on Jun. 23, 2022.
Prior Publication US 2023/0417223 A1, Dec. 28, 2023
Int. Cl. F03D 7/02 (2006.01); F03D 80/00 (2016.01)
CPC F03D 80/004 (2023.08) [F03D 7/0276 (2013.01); F05B 2270/30 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for controlling a wind power installation which has a rotor having a plurality of rotor blades with adjustable blade angles, and having a rotor diameter, wherein the rotor is able to be operated at a variable rotor rotating speed; and wherein a region in which the rotor blades move forms a danger zone for birds and bats, the method comprising:
checking whether a bird or bat approaching the wind power installation is an endangered bird, wherein in response to an endangered bird being identified:
detecting a bird position as a current position of the endangered bird identified; and
controlling the rotor rotating speed as a function of the bird position with respect to the wind power installation,
wherein the rotor rotating speed is reduced in multiple stages or continuously as a distance of the bird position from the wind power installation decreases.
 
16. A wind power installation comprising:
a rotor having rotor blades that have adjustable blade angles, and having a rotor diameter, wherein the rotor is configured to be operated at a variable rotor rotating speed;
wherein a region in which the rotor blades move forms a danger zone for birds and bats,
a bird detection installation configured to check whether a bird or bat approaching the wind power installation is an endangered bird, and in response to an endangered bird having been identified detecting a bird position as a current position of the endangered bird identified; and
a controller configured to control the rotor rotating speed as a function of the bird position in relation to the wind power installation;
wherein the rotor rotating speed is reduced in multiple stages or continuously as a distance of the bird position from the wind power installation is reduced.