Searched for: subject:"Airborne%5C+Wind%5C+Energy"
(1 - 15 of 15)
document
Rushdi, Mostafa A. (author), Dief, Tarek N. (author), Yoshida, Shigeo (author), Schmehl, R. (author)
Kites can be used to harvest wind energy with substantially lower material and environmental footprints and a higher capacity factor than conventional wind turbines. In this paper, we present measurement data from seven individual tow tests with the kite system developed by Kyushu University. This system was designed for 7 kW traction power...
journal article 2020
document
Candade, A.A. (author), Ranneberg, Maximilian (author), Schmehl, R. (author)
In this paper, we present an aero-structural model of a tethered swept wing for airborne wind energy generation. The carbon composite wing has neither fuselage nor actuated aerodynamic control surfaces and is controlled entirely from the ground using three separate tethers. The computational model is efficient enough to be used for weight...
journal article 2020
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Rushdi, Mostafa A. (author), Rushdi, Ahmad A. (author), Dief, Tarek N. (author), Halawa, Amr M. (author), Yoshida, Shigeo (author), Schmehl, R. (author)
Kites can be used to harvest wind energy at higher altitudes while using only a fraction of the material required for conventional wind turbines. In this work, we present the kite system of Kyushu University and demonstrate how experimental data can be used to train machine learning regression models. The system is designed for 7 kW traction...
journal article 2020
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Dief, Tarek N. (author), Fechner, Uwe (author), Schmehl, R. (author), Yoshida, Shigeo (author), Rushdi, Mostafa A. (author)
In this paper, we applied a system identification algorithm and an adaptive controller to a simple kite system model to simulate crosswind flight maneuvers for airborne wind energy harvesting. The purpose of the system identification algorithm was to handle uncertainties related to a fluctuating wind speed and shape deformations of the...
journal article 2020
document
Airborne Wind Energy (AWE) is an emerging renewable energy technology that aims to replace the use of fossil fuels for energy production on an economical basis. A characteristic feature of the various AWE concepts is the use of tethered flying devices to access wind energy at higher altitudes where the wind is more consistent. Over the past...
book 2019
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Bechtle, Philip (author), Schelbergen, M. (author), Schmehl, R. (author), Zillmann, Udo (author), Watson, S.J. (author)
We compare the available wind resources for conventional wind turbines and for airborne wind energy systems. Accessing higher altitudes and continuously adjusting the harvesting operation to the wind resource substantially increases the potential energy yield. The study is based on the ERA5 reanalysis data which covers a period of 7 years...
journal article 2019
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Thedens, P. (author), De Oliveira Andrade, G.L. (author), Schmehl, R. (author)
We present a multidisciplinary design optimization method for the profile and structural reinforcement layout of a ram‐air kite rib. The aim is to minimize the structural elastic energy and to maximize the traction power of a ram‐air kite used for airborne wind energy generation. Because of the large deformations occurring during flight, a fluid...
journal article 2019
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van der Vlugt, R. (author), Bley, A.C. (author), Noom, Michael (author), Schmehl, R. (author)
The traction force of a kite can be used to drive a cyclic motion for extracting wind energy from the atmosphere. This paper presents a novel quasi-steady modelling framework for predicting the power generated over a full pumping cycle. The cycle is divided into traction, retraction and transition phases, each described by an individual set...
journal article 2019
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Salma, V. (author), Friedl, F. (author), Schmehl, R. (author)
Airborne wind energy systems use tethered flying devices to harvest wind energy beyond the height range accessible to tower-based wind turbines. Current commercial prototypes have reached power ratings of up to several hundred kilowatts, and companies are aiming at long-term operation in relevant environments. As consequence, system...
journal article 2019
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Schmehl, R. (author), Tulloch, Oliver (author)
conference paper 2019
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Lago, Jesus (author), Erhard, Michael (author), Diehl, Moritz (author)
Fast online generation of feasible and optimal reference trajectories is crucial in tracking model predictive control, especially for stability and optimality in presence of a time varying parameter. In this paper, in order to circumvent the operational efforts of handling a discrete set of precomputed trajectories and switching between them,...
journal article 2018
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Fechner, U. (author)
doctoral thesis 2016
document
Schmehl, R. (author)
Airborne wind energy is an emerging field in the renewable energy technologies that aims to replace the use of fossil fuels for energy production on an economical basis. A characteristic feature of the various concepts that are currently pursued is the use of tethered flying devices to access wind energy at higher altitudes where the wind is...
book 2015
document
Grete, C. (author)
The fundamental working principle of kite power generation is straightforward: a fast-flying kite pulls a tether from a drum, which drives a generator. At the maximum reel-out length, the kite is de-powered and pulled back, to initiate a new pumping cycle. The objective of this innovative technology is to make electricity generation affordable,...
journal article 2014
document
Fechner, U. (author), van der Vlugt, R. (author), Schmehl, R. (author), Ockels, W.J. (author)
Seminar organized by Delft University Wind energy research institute for European Academy of Wind Energy
conference paper 2011
Searched for: subject:"Airborne%5C+Wind%5C+Energy"
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