Wind turbines Probabilistic modelling Extreme turbulence Load alleviation control

Wind turbines; Probabilistic modelling; Extreme turbulence; Load alleviation control systems; Structural reliability; Environmental contours
NomenclatureAEPAnnual Energy ProductionBEMBlade Element Momentum theoryCDFCumulative Distribution FunctionCOVCoefficient of VariationECEnvironmental ContoursETMExtreme Turbulence ModelFORMFirst Order Reliability MethodIFORMInverse First Order Reliability MethodLSFFunctionPDFProbability Density Function
1. Introduction
Various aspects related to load control of 1-NM-PP1 wind turbine during power production in extreme turbulence have not been so far studied, specifically: how does the structural reliability of the wind turbine change if the turbulence model is uncertain? How can the uncertainty in the turbulence model be represented? In the presence of such uncertainty how does the structural reliability change with/without smart load alleviation control systems? The aim of ascomycetes work is thus to assess the structural reliability of a large multi-megawatt wind turbine blade and tower when the turbulence model is uncertain given that various load alleviation control features are used.