Archive | 2021
Field test of an active flap system on a full-scale wind turbine
Abstract
Abstract. This article describes a series of validation tests of an active flap system (AFS) on a multi-megawatt wind turbine. A single blade of a 4\u2009 MW \nturbine with 130\u2009 m rotor diameter (SWT-4.0-130) is retrofitted in the outer 15–20\u2009 m with the AFS. The AFS is controlled remotely\nwith a pneumatic pressure supply system located in the hub of the turbine. The measurements were performed between October 2017 and June 2019 using\ntwo different AFS configurations on the blade. A description of the system setup is given, as well as comparisons of measurements and aeroelastic\nsimulations. The measurements quantify the static load control authority of the AFS in atmospheric conditions, providing a preliminary estimate of\nload impact potential for the concept. This article presents, furthermore, a new method for the characterization of the load impact of such a system\nand its dynamic response under atmospheric conditions based on a blade-to-blade load comparison.