Dynamic modelling and simulation of a wind turbine

Download
2015
Altuğ, Ayşe Hazal
In this thesis, a dynamic model for a horizontal axis wind turbine is developed for an upwind configuration using the MATLAB/Simulink environment. Blade Element Momentum Theory is used to model the rotor. It is assumed that the rotor blades are rigid and wind speed is uniform. Aerodynamic and gravitational forces are calculated as distributed loads. Verification of the model is done by using the LMS Samtech, Samcef for Wind Turbines software. Aerodynamic properties of the blades, sectional loads and moments acting on the blades sections and performance outputs are compared for verification. Generator torque controller is designed to maximize power conversion at below rated regime. For above rated regime, a pitch controller is designed to keep generator speed at rated value. .

Suggestions

Genetic algorithm based aerodynamic shape optimization of wind turbine rotor blades using a 2-d panel method with a boundary layer solver
Polat, Özge; Tuncer, İsmail Hakkı; Sezer Uzol, Nilay; Department of Aerospace Engineering (2011)
This thesis presents an aerodynamic shape optimization methodology for rotor blades of horizontal axis wind turbines. Genetic Algorithm and Blade Element Momentum Theory are implemented in order to find maximum power production at a specific wind speed, rotor speed and rotor diameter. The potential flow solver, XFOIL, provides viscous aerodynamic data of the airfoils. Optimization variables are selected as the sectional chord length, the sectional twist and the blade profiles at root, mid and tip regions of...
INVESTIGATION AND OPTIMIZATION OF WINGLETS FOR HAWT ROTOR BLADES
Elfarra, Monier A.; Akmandor, I. Sinan; Sezer Uzol, Nilay (2011-03-25)
The main purpose of this paper is to optimize winglet geometry by using CFD with Genetic Algorithm and study its effects on power production. For validation and as a baseline rotor, the NREL Phase VI wind turbine rotor blade is used. The Reynolds-Averaged Navier-Stokes equations are solved and different turbulence models including the Spalart-Allmaras, k-epsilon Launder-Sharma, k-epsilon Yang-Shih and SST k-omega models are used and tested. The results of the power curve and the pressure distribution at dif...
Dynamic modeling, control and adaptive envelope protection system for horizontal axiswind turbines
Şahin, Mustafa; Yavrucuk, İlkay; Department of Aerospace Engineering (2018)
In this thesis study, a wind turbine envelope protection system is introduced to protect turbines throughout the below and above rated regions. The proposed protection system, which is based on a neural network, adapts to various turbines and operational conditions. It can keep the turbine within pre-defined envelope limits whenever a safe operation is about to be violated. The avoidance is realized by control limiting technique applied to the blade pitch controller output, thereby adjusting the blade pitch...
Wind field simulation in a wind farm using openfoam and actuator line model
Önel, Hüseyin Can; Tuncer, İsmail Hakkı (2019-05-14)
In this study, a horizontal axis wind turbine (HAWT) is modeled using so called Actuator Line Model (ALM), where full resolution of boundary layer over turbine blades is not needed and hence computation is cheaper. Results are validated against other numerical and experimental studies as well as panel method (XFOIL) and Blade Element Momentum Theory (BEMT) results which are still widely employed in today’s wind energy industry. Important simulation and operation parameters and their effects on accuracy are ...
Performance Comparison of two turbine blade pitch controller design methods based on equilibrium and frozen wake assumption,
Şahin, Mustafa; Yavrucuk, İlkay (2019-09-20)
This paper focuses on the design methods of two different gain-scheduled collective blade pitch controllers for a 5 MW horizontal axis wind turbine using equilibrium and frozen wake assumptions. The design and performance tests of the controllers are carried out using the MS Bladed Wind Turbine Simulation Model.
Citation Formats
A. H. Altuğ, “Dynamic modelling and simulation of a wind turbine,” M.S. - Master of Science, Middle East Technical University, 2015.