Nrel Wind Turbine Model

Definition of a 5-MW Reference Wind Turbine for Offshore System Development
J. Jonkman, S. Butterfield, W. Musial, and G. Scott

Technical Report
NREL/TP-500-38060 February 2009

Definition of a 5-MW Reference Wind Turbine for Offshore System Development
J. Jonkman, S. Butterfield, W. Musial, and G. Scott
Prepared under Task No. WER5.3301

Technical Report
NREL/TP-500-38060 February2009

National Renewable Energy Laboratory
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Acronyms and Abbreviations
ADAMS® = Automatic Dynamic Analysis of Mechanical SystemsA2AD = ADAMS-to-AeroDyn BEM CM DLL DOE DOF DOWEC DU = blade-element / momentum = center of mass = = = = = dynamic link library U.S. Department of Energy degree of freedom Dutch Offshore Wind Energy Converter project Delft University

ECN = Energy Research Center of the Netherlands equiripple = equalized-ripple FAST GE IEA MSL NACA NREL NWTC OCS OC3 PI PID RECOFF = Fatigue, Aerodynamics,Structures, and Turbulence = General Electric = International Energy Agency = mean sea level = National Advisory Committee for Aeronautics = National Renewable Energy Laboratory = National Wind Technology Center = offshore continental shelf = Offshore Code Comparison Collaborative = proportional-integral = proportional-integral-derivative = Recommendations for Design of Offshore Wind Turbines projectWindPACT= Wind Partnerships for Advanced Component Technology project w.r.t. = with respect to

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Nomenclature
Ad Bd Cd Cφ Dd fc GK IDrivetrain IGen IRotor KD KI KP Kφ Mφ n NGear P P0 ∂P ∂θ t TAero TGen = discrete-time state matrix = discrete-time input matrix = discrete-time output state matrix = effective damping in the equation of motion for the rotor-speed error = discrete-time inputtransmission matrix = corner frequency = gain-correction factor = drivetrain inertia cast to the low-speed shaft = generator inertia relative to the high-speed shaft = rotor inertia = blade-pitch controller derivative gain = blade-pitch controller integral gain = blade-pitch controller proportional gain = effective stiffness in the equation of motion for the rotor-speed error = effective inertia...