风力发电文献资料

WindPACT= Wind Partnerships for Advanced Component Technology project w.r.t. = with respect to
iii
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 input transmission 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 (mass) in the equation of motion for the rotor-speed error = discrete-time-step counter = high-speed to low-speed gearbox ratio = mechanical power = rated mechanical power = sensitivity of the aerodynamic power to the rotor-collective blade-pitch angle = simulation time = aerodynamic torque in the low-speed shaft = generator torque in the high-speed shaft
Technical Report
NREL/TP-500-38060 February 2009
National Renewable Energy Laboratory
1617 Cole Boulevard, Golden, Colorado 80401-3393 303-275-3000 • NREL is a national laboratory of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Operated by the Alliance for Sustainable Energy, LLC Contract No. DE-AC36-08-GO28308
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
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 project
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
Printed on paper containing at least 50% wastepaper, including 20% postconsumer waste
Acronyms and Abbreviations
ADAMS® = Automatic Dynamic Analysis of Mechanical Systems A2AD = 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
NOTICE This report was prepared as an account of work sponsored by an agency of the United States government. Neither the United States government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States government or any agency thereof. Available electronically at /bridge Available for a processing fee to U.S. Department of Energy and its contractors, in paper, from: U.S. Department of Energy Office of Scientific and Technical Information P.O. Box 62 Oak Ridge, TN 37831-0062 phone: 865.576.8401 fax: 865.576.5728 email: mailto:reports@ Available for sale to the public, in paper, from: U.S. Department of Commerce National Technical Information Service 5285 Port Royal Road Springfield, VA 22161 phone: 800.553.6847 fax: 703.605.6900 email: orders@ online ordering: /oru x x,y,z y α Δθ ΔΩ
= discrete-time step = unfiltered generator speed = for the control-measurement filter, the filter state = set of orthogonal axes making up a reference-frame coordinate system = for the control-measurement filter, the filtered generator speed = low-pass filter coefficient = small perturbation of the blade-pitch angles about their operating point = small perturbation of the low-speed shaft rotational speed about the rated speed = low-speed shaft rotational acceleration = damping ratio of the response associated with the equation of motion for the rotor-speed error = full-span rotor-collective blade-pitch angle = rotor-collective blade-pitch angle at which the pitch sensitivity has doubled from its value at the rated operating point = the ratio of a circle’s circumference to its diameter