Device and method for controlling a wind turbine based on a change element
AssigneeSiemens Gamesa Renewable Energy A/S
InventorJohannes Gerhardes Wardjan Alberts
Life of this patent
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Abstract
Provided is a control device for controlling a wind turbine, the wind turbine including a rotor and at least one blade being rotatable mounted to the rotor. The control device includes a detecting device being configured to detect an amount of a bending moment of the blade; and a change element having an input and an output, wherein the input is configured to receive the detected amount of the bending moment of the blade and the output is configured to output a response to a differential of the detected amount of the bending moment of the blade. The control device is configured to control the wind turbine based on the response.
Claims15
A control device for controlling a wind turbine, the wind turbine comprising a rotor and at least one blade being rotatable mounted to the rotor, the control device comprising:
- a detecting device configured to detect an amount of a bending moment of the blade;
- and
- a change element having an input and an output, wherein the input is configured to receive the detected amount of the bending moment of the blade and the output is configured to output a response to a differential of the detected amount of the bending moment of the blade;
- wherein the control device is configured to control the wind turbine using a response behaviour based on the response,
- wherein the response behaviour is based directly on a derivative element that provides a phase lead over changes in rotor speed, and
- wherein the control device is configured to modify a speed control of the rotor by increasing a torque reference, a power reference and/or a pitch reference when the response is positive, and by decreasing the torque reference, the power reference and/or the pitch reference when the response is negative.
A wind turbine comprising:
- a tower;
- a rotor, the rotor being mounted at the top of the tower to rotate about a rotational axis, wherein the rotor has a plurality of blades;
- and
- a control device including a detecting device configured to detect an amount of a bending moment of the blade and a change element having an input and an output, wherein the input is configured to receive the detected amount of the bending moment of the blade and the output is configured to output a response to a differential of the detected amount of the bending moment of the blade, wherein the control device is configured to control the wind turbine using a response behaviour based on the response, wherein the response behaviour is based directly on a derivative element that provides a phase lead over changes in rotor speed, and wherein the control device is configured to modify a speed control of the rotor by increasing a torque reference, a power reference and/or a pitch reference when the response is positive, and by decreasing the torque reference, the power reference and/or the pitch reference when the response is negative.
A method of controlling a wind turbine, the wind turbine comprising a rotor and at least one blade being rotatable mounted to the rotor, the method comprising steps of:
- detecting an amount of a bending moment of the blade;
- providing a change element having an input and an output;
- inputting the detected amount of the bending moment of the blade in the input of the change element;
- outputting a response from the output of the change element;
- and
- controlling the wind turbine using a response behaviour based on the output response, wherein the response behaviour is based directly on a derivative element that provides a phase lead over changes in rotor speed,
- wherein the control device is configured to modify a speed control of the rotor by increasing a torque reference, a power reference and/or a pitch reference when the response is positive, and by decreasing the torque reference, the power reference and/or the pitch reference when the response is negative.
Dependencies are inferred from the claim text.