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van Reijen, Marc (author)
A method is introduced to measure the in flight flow field and geometric shape of an energy producing kite. The method is applied on beach tests during controlled flight maneuvers as well as equilibrium positions. The measurements of different sensors are validated by use of independent coherence of the found results. After this the deformations...
master thesis 2018
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Leiro Fonseca, Andres (author)
Reducing the cost of constructing wind turbines, as well as extending their design life, are two ways of reducing the cost of energy from wind. To achieve this, this project tested two innovative tuned-mass damper systems, which reduce resonance of the tower, and do so minimizing additional mass needed on the nacelle. These TMD systems allow the...
master thesis 2018
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Steiner, Julia (author)
The field of Airborne Wind Energy is concerned with harvesting high-altitude wind power; the corresponding group in Delft, in particular, is investigating the suitability of a kite for this purpose. Due to the high complexity that such a system ensues, it is of interest to have a fundamental understanding of the critical aero-elastic modes of...
master thesis 2018
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Gkoutis, Konstantinos (author)
Surrogate modeling is a family of engineering techniques that attracts great interest today and can be applied in many challenging fields. A big advantage of it is that surrogate models (models based on these techniques) offer reliable results by being computationally cheaper than other candidate models. The savings in computational time is...
master thesis 2018
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de la Garza Cuevas, Roberto (author)
Airborne Wind Energy is a promising technology that is becoming the point of interest for many applications. One market in which the AWE systems can open a path as a renewable distributed generator is in offgrid communities or camps. Nowadays, this market is dominated by fossil fuel energy like diesel generators. Even though the diesel is cheap,...
master thesis 2018
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Becker, Max (author)
The current wind turbine design tools are based on aerodynamic simulations using blade element momentum (BEM) codes to calculate loads and power, see for instance the tools HAWC2, Bladed or FAST. This engineering method is computationally efficient, but theoretically valid only for steady two dimensional flow in non-yawed conditions.

master thesis 2017
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Anselmi, Luca (author)
As the suitable locations for large wind farms in the mainland are limited, wind energy generation in the urban environment is gaining interest. The Diffuser Augmented Wind Turbine (DAWT) is a promising concept where the turbine is embedded into an airfoil-shaped diffuser (also named shroud or duct), which has the function of increasing the mass...
master thesis 2017
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Baudino Bessone, Matteo (author)
Offshore wind energy is a fast-growing sector in the energy industry, and the cost of electricity per kilowatt-hour from offshore wind is decreasing significantly. Until now, offshore wind turbines are mainly installed on bottom-mounted foundations, which are economically feasible in shallow waters. This factor has limited the development of...
master thesis 2017
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Vigney Kumar, Vigney (author)
Offshore Wind Farm (OWF) installation procedure is a complicated phase requiring excellent management of resources for timely completion of tasks. The wind farm installation period involves crucial stages like streamlining onshore logistics, transportation of components on vessels, installation of foundations, wind turbines, and cable laying,...
master thesis 2017
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Damen, Tim (author)
master thesis 2017
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Rojas Castro, Ivan (author)
Floating offshore wind energy is being widely implemented in deep-water sites thanks to its numerous advantages, which among others include the access to stronger and undisturbed wind resources. In addition, considering the fast-paced growth in size and power generating capacity of offshore wind turbines, the designs of floating foundations need...
master thesis 2017
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Montenegro Montero, Mariana (author)
In this report, the issue of pitch control in a Vertical Axis Wind Turbine is tackled. By using and aerodynamic model, a theoretical optimum pitch solution is found and then a simple four-bar mechanism is adapted to that theoretical solution to achieve a simple and elegant control of the pitch in the turbine. The model used is the Actuator...
master thesis 2017
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Manjunath, Pranav (author)
Vortex Generators (VGs) are one of the most commonly used passive flow control devices. Recent studies have shown that it is beneficial to use sub-boundary layer vortex generators (SBVGs). The height of these generators varies between 10% - 50% of the boundary layer thickness. However, the reduced height causes the induced vortices to be...
master thesis 2017
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Kairuz Fonseca, Shajid (author)
Large turbines are a synonym of more energy harvested from the wind, but also of increment in the costs. This dilemma has led many researchers on the field of wind energy to wonder about the optimum size for wind turbines concerning the lowest cost of energy. This project studies the optimum turbine size for offshore applications through the...
master thesis 2017
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Dicholkar, Antariksh (author)
Material bend-twist coupling has been widely studied in the research community as a passive control mechanism for a wind turbine. However, there is a lack of research in incorporating it in the rotor design process, with little research being conducted for its application to small wind turbines. The present study focuses on this issue by...
master thesis 2017
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Waars, Niels (author)
Modern multi-megawatt wind turbines are tall and may reach heights of 200 meter. Tall wind turbines require measurements above typical measurement mast height. As tall measurement masts are expensive and cumbersome to install, wind measurements at hub height are scarce. Currently, the use of lidars in wind measurement campaigns is increasing....
master thesis 2017
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Manzoor, Qasim (author)
The Blade Element Momentum (BEM) method is a widely used model for rotor performance and aeroelastic calculations but it has assumptions in its formulation which limit its accuracy. The theoretical background of these limitations has been studied and an improvement in the form of the Near Wake Model (NWM) has been identified. The model adds near...
master thesis 2017
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Veraart, Marijn (author)
master thesis 2017
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Li, Ang (author)
The aim of this thesis is to evaluate the influence between the two counter-rotating VAWT rotors with the Double Actuator Cylinder (DAC) model which will be validated against the panel code. The DAC model is developed from the original Actuator Cylinder (AC) model which includes the Modified-Linear (Mod-Lin) correction. The original AC model for...
master thesis 2017
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Garry Yuan Kwan, Garry (author)
Idling instabilities of large wind turbines in extreme winds is a relatively well known problem for manufacturers, at least in terms of the results in calculations. However, many are still sceptical of how realistic such instabilities are in actuality due to limitations in the current state of the art aeroelastic tools.
The overall aim of...
master thesis 2017
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