Print Email Facebook Twitter Semi-passive trailing-edge flaps Title Semi-passive trailing-edge flaps: for ultimate and fatigue load reductions on wind turbines Author La Porte, Jesse (TU Delft Aerospace Engineering) Contributor Barlas, Thanasis (mentor) Ferreira, Carlos (graduation committee) Degree granting institution Delft University of TechnologyTechnical University of Denmark Programme European Wind Energy Masters (EWEM) | Rotor Design Track Date 2019-08-15 Abstract This thesis investigates the potential of a semi-passive trailing-edge flap on a large conceptual wind turbine. The mechanism passively reacts to blade and tower accelerations by changing the airfoil camber, opposing the dynamic loads on the turbine. An active element is present, which influences the mean of the flap oscillation. First, a low-fidelity, parameter study was done in MATLAB. Next, the flap model was implemented in the aeroelastic code HAWC2, to capture dynamic and structural effects due to blade accelerations. Results show that the semi-passive design reduces ultimate and fatigue loads, during normal power production. Effects on AEP are minimized by the active element and are an improvement to the passive model. The present study motivates simulation of more design load cases, e.g. parked or grid failure. Also, the benefits of the mechanism should be investigated in combination with a new, enlarged, rotor at similar key loads. Subject wind energyWind TurbineloadsaerodynamicscontrolaeroelasticDTU 10MW RWTEnergyflapsfatigue To reference this document use: http://resolver.tudelft.nl/uuid:f6af846b-b59a-4663-8eac-f9a83fb43c90 Part of collection Student theses Document type master thesis Rights © 2019 Jesse La Porte Files PDF Thesis_JNLaPorte.pdf 2.65 MB Close viewer /islandora/object/uuid:f6af846b-b59a-4663-8eac-f9a83fb43c90/datastream/OBJ/view