Wind turbine control method

摘要

A wind turbine control method is described comprising the detection of the presence of an anomaly in the aerodynamic profile of the blades and operation of the wind turbine in accordance not only with the determination of said anomaly, but also taking into account the characteristics thereof.

主权项

1. A method for controlling a wind turbine that comprises a rotor which in turn comprises a series of blades, said method comprising the following steps:
determining, by a series of sensors, at least one parameter representative of the wind turbine operating status; calculating a first signal sensitive to unbalanced variations in the aerodynamic profile between the blades based on the at least one parameter representative of the wind turbine operating status; comparing said first signal to a first threshold value; determining the existence of an unbalanced variation in the aerodynamic profile between the blades when the first signal exceeds the first threshold value; and modifying at least one torque control loop that sets the torque of the rotor when the existence of an unbalanced variation in the aerodynamic profile of the blades is determined in the former step increasing the availability of the wind turbine, wherein modifying at least one torque control loop comprises activating a first frequency filter that suppresses a rotation frequency of the rotor in the torque control loop.