Naslov
Multi-mass Dynamic Model of a Variable-length Tether Used in a High Altitude Wind Energy System

Autori
Milutinović, Milan ; Kranjčević, Nenad ; Deur, Joško

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
8th Conference on Sustainable Development of Energy, Water and Environment Systems Digital Proceedings / Ban, Marko - Zagreb : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2013, 1-23

Skup
8th Conference on Sustainable Development of Energy, Water and Environment Systems

Mjesto i datum
Dubrovnik, Hrvatska, 22.09.2013. - 27.09.2013

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Variable-length tether dynamics; multibody dynamics; high altitude wind energy; dynamics modelling; simulation

Sažetak
This paper presents a multibody approach to dynamics modelling of a variable-length tether moving through air, in a system where an airborne module generates aerodynamic lift and uses the tether to cyclically drive the winch-generator unit fixed on the ground. The rope is modelled as a series of straight, massless, elastic segments with rope mass lumped to segment joints. Individual segment length is constant, with the exception of segment being wound out from the winch, while the number of segments is variable. For the segment being wound out, a special modelling strategy is derived. The forces acting on the rope are also concentrated at the joints, simplifying computations and facilitating rope aerodynamic drag modelling. The proposed tether dynamics model is integrated into the overall model of controlled power production system and verified by computer simulation. The model is compared with two simpler tether dynamics models also proposed in the paper.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

POVEZANOST RADA