Wind turbine control arrangement
AssigneeSiemens Gamesa Renewable Energy A/S
InventorsJohannes Gerhardes Wardjan Alberts, Bjarne Skovmose Kallesøe
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Abstract
A control arrangement for a variable-speed wind turbine includes a loading analysis module configured to analyse a number of environment values to establish whether the momentary wind turbine loading is lower than a loading threshold when the rotational speed of the aerodynamic rotor has reached its rated value; and a speed boost module configured to determine a speed increment for the rotational speed of the aerodynamic rotor if the wind turbine loading is lower than the loading threshold.
Claims14
A control arrangement for a variable-speed wind turbine constructed to fulfil requirements of a wind class as defined by IEC 61400-1, the control arrangement comprising:
- a controller configured to:
- analyze a plurality of environment values to establish whether a momentary wind turbine loading is lower than a loading threshold when a rotational speed of an aerodynamic rotor has reached a rated value, wherein a rated speed is associated with a level of output power that is less than a rated output power for a class of wind turbine;
- and
- apply a speed increment to the rotational speed of the aerodynamic rotor if the wind turbine loading is lower than the loading threshold, and wherein a power/speed relationship follows an ideal trajectory for the class of wind turbine.
A method of operating a variable-speed wind turbine, the method comprising:
- establishing whether a momentary wind turbine loading is lower than a loading threshold when a rotational speed of an aerodynamic rotor has reached a rated speed, wherein the rated speed is associated with a level of output power that is less than a rated output power for a class of wind turbine;
- determining a speed increment for the rotational speed of the aerodynamic rotor on a basis of an ideal power/speed trajectory of the wind turbine if the wind turbine loading is lower than the loading threshold;
- and
- increasing a rotor speed by the speed increment.
Dependencies are inferred from the claim text.