Multi-mass dynamic model of a variable-length tether used in a high altitude wind energy system

Milutinović, Milan and Kranjčević, Nenad and Deur, Joško (2013) Multi-mass dynamic model of a variable-length tether used in a high altitude wind energy system. = Multi-mass dynamic model of a variable-length tether used in a high altitude wind energy system. In: 8th Conference on Sustainable Development of Energy, Water and Environment Systems – SDEWES Conference, 22-27.09.2013., Dubrovnik, Hrvatska.

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Official URL: http://bib.irb.hr/prikazi-rad?rad=671963

Abstract

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.

Item Type: Conference or Workshop Item (Poster)
Keywords (Croatian): variable-length tether dynamics, multibody dynamics, high altitude wind energy, dynamics modelling, simulation
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 100 Department of Design > 120 Chair of Machine Elements
900 Department of Robotics and Production System Automation > 910 Chair of Engineering Automation
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 24 Mar 2016 16:48
Last Modified: 12 Sep 2018 07:46
URI: http://repozitorij.fsb.hr/id/eprint/5304

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