The yield of wind energy converters depends primarily on the area swept by the rotor blade. For the materials currently used in the design of rotor blades, the physical load limits have been reached with today’s turbine sizes.
In the future, load-reducing measures such as the use of self-actuating flaps could enable the production of larger rotor blade diameters using current state-of-the-art materials. With smaller rotor blade diameters as well, e.g. with existing turbines, the load-reducing measures can optimise operating costs and service life. In the future, self-actuating flaps may also prove useful in reducing peak loads and vibration inductions on mid-size wind energy converters, such as in the event of cross-flow, in order to avoid unscheduled maintenance or to allow the wind energy converters to continue to be operated safely beyond the previously planned service life.