On the take-off of airborne wind energy systems based on rigid wings

The problem of launching a tethered rigid aircraft for airborne wind energy generation is investigated. Exploiting well-assessed physical principles, an analysis of four different take-off approaches is carried out. The approaches are then compared on the basis of quantitative and qualitative criter...

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Vydáno v:Renewable energy Ročník 107; s. 473 - 488
Hlavní autoři: Fagiano, L., Schnez, S.
Médium: Journal Article
Jazyk:angličtina
Vydáno: Elsevier Ltd 01.07.2017
Témata:
Airborne wind energy
aircraft
Autonomous take-off
economic sustainability
mathematical models
Mechatronic systems
Renewable energy
Tethered aircraft
viability
Wind energy
wind power
wind speed
wings
Autonomous take-off
Airborne wind energy
Mechatronic systems
Wind energy
Tethered aircraft
Renewable energy
ISSN:0960-1481, 1879-0682
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Shrnutí:The problem of launching a tethered rigid aircraft for airborne wind energy generation is investigated. Exploiting well-assessed physical principles, an analysis of four different take-off approaches is carried out. The approaches are then compared on the basis of quantitative and qualitative criteria introduced to assess their technical and economic viability. In particular, the additional power required by the take-off functionality is computed and related to the peak mechanical power generated by the system. Moreover, the additionally required on-board mass is estimated, which impacts the cut-in wind speed of the generator. Finally, the approximate ground area required for take-off is also determined. After the theoretical comparison, a deeper study of the concept that is deemed the most viable one, i.e. a linear take-off maneuver combined with on-board propellers, is performed by means of numerical simulations. The simulation results are used to refine the initial analysis and further confirm the viability of the approach. •An assessment of four take-off approaches for airborne wind energy is presented.•The power required for the take-off functionality is related to the overall generated power.•A theoretical analysis shows that a linear take-off concept is the most viable one.•Numerical simulations refine the theoretical results and further confirm the main findings.
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ISSN:0960-1481
1879-0682
DOI:10.1016/j.renene.2017.02.023