Method for controlling a wind turbine when the power setpoint value is changed

A method for controlling a wind turbine, the wind turbine including a tower and a rotor, and comprising at least one rotor blade including an adjustable blade pitch angle, wherein a change in a power value takes place in a time interval (TE) and by control of one or more operating parameters which determine power to be fed in by the wind turbine, the method comprising:

• determining a parameterized time function of a tower deflection for the time interval (TE), wherein a series of boundary conditions are defined for the parameterized time function of the tower deflection;
• determining a thrust of the rotor of the wind turbine for the parameterized time function of the tower deflection;
• calculating a function for controlling the one or more operating parameters from the thrust of the rotor;
• and
• controlling the rotor based on the calculated function,
• wherein the parameters of the parameterized time function are determined by boundary conditions so that the parameterized time function describes an unambiguous course of movement for the tower.