Controlling of segmented add-on members of a wind turbine blade
AssigneeSiemens Gamesa Renewable Energy A/S
InventorsPer Egedal, Gustav Hoegh
Life of this patent
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Abstract
Provided is a wind turbine and to a method and a device for controlling aerodynamic properties of a blade of the wind turbine, the blade including a predetermined number of add-on members which are actuated by a corresponding trim actuator to alter the aerodynamic properties of the blade, wherein each trim actuator is configured to hold the add-on member in a predetermined first position and a predetermined second position. The control device is configured to determine a first number of add-on members which are to be held at the predetermined first position, and to determine a second number of add-on members which are to be held at the predetermined second position.
Claims10
A method of controlling aerodynamic properties of a blade of a wind turbine, the blade comprising a predetermined number of add-on members which are actuated by a corresponding trim actuator to alter the aerodynamic properties of the blade, wherein each trim actuator is configured to hold an add-on member in a predetermined first position and a predetermined second position;
- wherein the method comprises:
- determining a first number of add-on members which are to be held at the predetermined first position, and determining a second number of add-on members which are to be held at the predetermined second position, without receiving feedback from a sensor about positions of the first number of add-on members and the second number of add-on members;
- and
- actuating the first number of add-on members and the second number of add-on members with a trim activation signal in a digital on/off manner so that the first number of add-on members and the second number of add-on members only transition between a fully open position and a fully closed position.
Dependencies are inferred from the claim text.