Individual blade adjustment in a wind power installation

A method for controlling a wind power installation, wherein:

• the wind power installation has a rotor with a plurality of rotor blades,
• the plurality of rotor blades have adjustable blade angles,
• each rotor blade of the plurality of blade is individually activatable, the method comprising:
• for individual activation of each rotor blade of the plurality of rotor blades, predetermining a total adjustment rate indicative of an intended speed of change of the respective blade angle,
• determining an individual offset angle, which indicates a value by which the blade angle is intended to deviate from a collective blade angle, for each rotor blade,
• determining an individual feed forward control adjustment rate, which indicates an adjustment rate, which is provided for reaching the offset angle, for each rotor blade from the individual offset angle,
• determining an individual offset deviation for each rotor blade depending on a comparison of the individual offset angle and a detected blade angle of the respective rotor blade,
• determining the total adjustment rate of each rotor blade depending on:
• at least one of a collective blade angle identical for all of the rotor blades and a collective adjustment rate identical for all of the rotor blades describing an intended speed of change of the collective blade angles,
• the individual feed forward control adjustment rate, and
• the individual offset deviation, and
• adjusting each rotor blade based on the individual offset angle of the respective rotor blade, the individual feed forward control adjustment rate of the respective rotor blade, the individual offset deviation of the respective rotor blade, and the total adjustment rate of the respective rotor blade.