Operating a wind turbine for wake control

A method of operating a wind turbine for controlling wake effects on a downstream wind turbine, the wind turbine including at least a rotor blade and a plurality of aerodynamic devices for influencing an airflow flowing on the rotor blade, each aerodynamic device being movable between at least a respective first configuration and a second respective configuration, the method comprising:

• moving each aerodynamic device between the first configuration and the second configuration controlled to induce turbulence and increase mixing with ambient wind flow for influencing a wake generated by the wind turbine and for wake recovery due to increased mixing with the ambient wind flow, and, as a function of influencing the wake, a recovery to the free-stream conditions that improve power production on the downstream wind turbine;
• wherein each rotor blade comprises more than one aerodynamic device, each aerodynamic device being moved between the first configuration and the second configuration depending on a radial position of the aerodynamic device along the rotor blade.