System and method for reducing wind turbine loads caused by rotor imbalance
AssigneeGeneral Electric Renovables Espana, S.L.
InventorsTill Hoffmann, Leonardo Cesar Kammer, Conner Brooks Shane
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Abstract
A method for reducing loads acting on a wind turbine includes determining, via a processor, at least one loading condition of the wind turbine resulting from a wind shear condition below a design threshold, determining, via the processor, a rotor speed setpoint of the wind turbine to cause an increase in thrust when the at least one loading condition exceeds a loading threshold; operating the wind turbine based on the rotor speed, and operating a rotor imbalance control module of the wind turbine to at least partially compensate for the at least one loading condition of the wind turbine resulting from the wind shear condition below the design threshold.
Claims17
A method for adaptive rotor imbalance control in a wind turbine, the method comprising:
- determining, via a processor, one or more wind conditions at the wind turbine;
- determining, via the processor, one or more control actions currently implemented for rotor imbalance control of a rotor of the wind turbine;
- determining, via the processor, at least one loading condition of the wind turbine resulting from a wind shear condition below a design threshold;
- determining, via the processor, whether the rotor is imbalanced beyond a predetermined threshold as a function of the at least one loading condition;
- determining, via the processor, whether the one or more wind conditions at a nacelle of the wind turbine are indicative of negative wind shear conditions at the wind turbine;
- and
- generating, via the processor, a correction command for the rotor imbalance control when the rotor is imbalanced beyond the predetermined threshold and when the one or more wind conditions at the nacelle of the wind turbine are indicative of the negative wind shear conditions;
- and
- operating, via the processor, the wind turbine based on the correction command to at least partially compensate for the at least one loading condition.
A system for adaptive rotor imbalance control in a wind turbine, the wind turbine having a nacelle mounted atop a tower and a rotor mounted to the nacelle, the rotor having a rotatable hub with a plurality of rotor blades mounted thereto, the system comprising:
- a controller comprising at least one processor configured to perform a plurality of operations, the plurality of operations comprising:
- determining one or more wind conditions at the wind turbine;
- determining one or more control actions currently implemented for rotor imbalance control of the rotor of the wind turbine;
- determining at least one loading condition of the wind turbine resulting from a wind shear condition below a design threshold;
- determining whether the rotor is imbalanced beyond a predetermined threshold as a function of the at least one loading condition;
- determining whether the one or more wind conditions at the nacelle of the wind turbine are indicative of negative wind shear conditions at the wind turbine;
- and
- generating a correction command for the rotor imbalance control when the rotor is imbalanced beyond the predetermined threshold and when the one or more wind conditions at the nacelle of the wind turbine are indicative of the negative wind shear conditions;
- and
- operating the wind turbine based on the correction command to at least partially compensate for the at least one loading condition.
Dependencies are inferred from the claim text.