System and method for compensating for rotor imbalance in a wind turbine

A system for compensating for rotor imbalance of a wind turbine, the system comprising:

• the wind turbine comprising a tower, a rotor, and a plurality of rotor blades;
• a controller communicatively coupled with the wind turbine, the controller comprising a processor, the controller configured to:
• receive, via the processor, at least one signal associated with an acceleration of a tower of the wind turbine and at least one signal associated with a position of a rotor of the wind turbine;
• estimate a rotor imbalance based on the at least one signal associated with the acceleration of the tower;
• estimate, via an adaptive filter algorithm programmed in the processor of the controller, components of the rotor imbalance relative to the rotor position;
• calculate, via the controller, a respective pitch angle offset for a plurality of rotor blades of the wind turbine based on the estimated components of the rotor imbalance, wherein the respective pitch angle offset for the plurality of rotor blades is configured to reduce a first excitation magnitude of rotor imbalance;
• and
• adjust, via the controller, a pitch angle of each of the plurality of rotor blades by the respective pitch angle offset, thereby reducing first excitation magnitude disturbances on the acceleration of the tower.