Lift modifying device for a rotor blade, rotor blade of a wind turbine and method for modifying the lift of a rotor blade

A lift modifying device for a rotor blade of a wind turbine, the lifting modifying device comprising:

• at least one fluid jet module attached to an outer surface of the rotor blade so that the at least one fluid jet module projects upward from the outer surface of the blade, and at least one compressed fluid source, wherein the at least one fluid jet module comprises multiple fluid jets which are fluidically connected to the at least one compressed fluid source, the at least one fluid jet module is configured to be arranged at a suction side or a pressure side of an airfoil of the rotor blade, and the at least one fluid jet module is configured to generate a fluid curtain separating an air flow on the suction side or the pressure side of the airfoil, when the rotor blade is provided with the lift modifying device on the suction side or the pressure side and the at least one compressed fluid source supplies compressed fluid to the at least one fluid jet module;
• wherein the at least one fluid jet module is at least two fluid jet modules, further wherein each of the at least two fluid jet modules comprises multiple fluid jets, each of the at least two fluid jet modules is connected by a separate fluid supply line to the at least one compressed fluid source, and each separate fluid line has a valve arranged therein.