Abstract
A load-dependent passive camber control concept is introduced for alleviating load fluctuations on wind turbine rotor blades with the overall goal of reducing fatigue and increasing durability and blade lifetime. The passive change of the camber line is realized through kinematically coupled leading and trailing-edge flaps. The device is modeled aeroelastically and aerodynamic and structural parameters are chosen to represent typical wind turbine situations. The model is invoked for three particular loading scenarios: step changes in wind velocity, sinusoidal changes in wind velocity, and a generated one-dimensional turbulence field. In all cases a significant decrease in load fluctuations could be demonstrated. Future work will focus on experimental verification of the model and optimization strategies for choosing the aerodynamic and structural parameters.
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