Fundamentals of Airborne Wind Energy Systems

138 Pages·2017·9.44 MB·English

by  Antonello Cherubini

Fundamentals of Airborne Wind
Energy Systems
Universidad Carlos III de Madrid
Antonello Cherubini
PERCRO Robotics Laboratory,
Via alamanni 13b, Ghezzano, Pisa
December 2017
About me
Antonello Cherubini ( www.antonellocherubini.com )
5 years experience in Wind Drones
Mechanical engineer
Work Experience in AWE
• 2013-2017 PhD in wind drones at Sant’Anna Pisa, the finest technical university in Italy
• 2012-2013 Mechanical engineer at Kitegen Research, Italian airborne wind energy company
Publications in AWE
• A. Cherubini, G. Moretti, M. Fontana, “Sistema aereo di captazione eolica d’altaquota per generatore
eolico”, patent application
• ‘Airborne Wind Energy Systems: A review of the technologies’, 2015
First google result after wikipediatyping ‘airborne wind energy’
• ‘Simplified model of offshore airbornewind energy converters’, 2015
• ‘Dynamic modeling of floating offshore airborne wind energy converters’, 2016, accepted
• ‘Puleggia perfezionata per verricello ad alta efficienza’, patent applicationITTO20130365, 2013
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Program
• Energy and Renewable Energies, the current scenario
• Introduction to Airborne Wind Energy (AWE)
• Basic power rating of Airborne Wind Energy Systems (AWES)
• AWES classifications and examples
• Tether sag shape and angle of attack control
• Power curve of AWES
• Betz limit does not exist in AWES
• Iterative solvers for AWES
• Momentum conservation in fly-gen AWES
Energy and Renewables
Where are we?
Energy is vital
Examples:
• Everything is energy: food, houses, medical drugs, clothes
• Italy produces between 50 and 60% of its own wheat*,
to move it we need energy
• Countries who do not have access to abundant energy are third world
countries
* Source: http://www.ilfattoquotidiano.it/2016/07/11/produzione-grano-agricoltori-contro-industriali-si-accollino-perdite-stop-
ai-prezzi-da-discount-a-causa-dellimport/2891657/
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Embodied energy
SUN 9%
31% production of inorganic fertilizers
19% production/use of machinery
16% transport of food
13% irrigations (pumps etc.)
8% stock farming (feeding excluded)
FOSSIL FUELS 5% drying
91% 5% production of pesticides
3% other consumptions
Sources: graphical representation by Marcello Corongiu, data from:
D.JC. MACKAY, Without the hot air, Cambridge University, 2000
D. COOLEY E. GOODLIFFE – J. MACDIARMIK -Embodied energy of food, Exeter University, 1998
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Effects of energy availability:
+250% productivity in agriculture
Graphical representation by Marcello Corongiu
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Effects of energy availability:
urbanization
Graphical representation by Marcello Corongiu
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Effects of energy availability:
transport
Graphical representation by Marcello Corongiu
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Effects of energy availability:
welfare (late 19th century)
Health Pensions
care
Free Social
time mobility
Graphical representation by Marcello Corongiu
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