Field test of an active flap system on a full-scale wind turbine

Abstract. This article describes a series of validation tests an active flap system (AFS) on multi-megawatt wind turbine. A single blade 4 MW turbine with 130 m rotor diameter (SWT-4.0-130) is retrofitted in the outer 15–20 AFS. The AFS controlled remotely pneumatic pressure supply located hub measurements were performed between October 2017 and June 2019 using two different configurations blade. description setup given, as well comparisons aeroelastic simulations. quantify static load control authority atmospheric conditions, providing preliminary estimate impact potential for concept. presents, furthermore, new method characterization such its dynamic response under conditions based blade-to-blade comparison.