Adaptive flight path control of airborne wind energy systems

Tarek N. Dief, Uwe Fechner, Roland Schmehl, Shigeo Yoshida, Mostafa A. Rushdi

Research output: Contribution to journalArticleScientificpeer-review

2 Citations (Scopus)
44 Downloads (Pure)

Abstract

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 tethered membrane wing. Using a pole placement controller, we determined the required locations of the closed-loop poles and enforced them by adapting the control gains in real time. We compared the path-following performance of the proposed approach with a classical proportional-integral-derivative (PID) controller using the same system model. The capability of the system identification algorithm to recognize sudden changes in the dynamic model or the wind conditions, and the ability of the controller to stabilize the system in the presence of such changes were confirmed. Furthermore, the system identification algorithm was used to determine the parameters of a kite with variable-length tether on the basis of data that were recorded during a physical flight test of a 20 kW kite power system. The system identification algorithm was executed in real time, and significant changes were observed in the parameters of the dynamic model, which strongly affect the resulting response.

Original languageEnglish
Article number667
Number of pages29
JournalEnergies
Volume13
Issue number3
DOIs
Publication statusPublished - 2020

Keywords

  • Adaptive algorithms
  • Airborne wind energy
  • Kite power system
  • Pole placement
  • System identification

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  • Cite this

    Dief, T. N., Fechner, U., Schmehl, R., Yoshida, S., & Rushdi, M. A. (2020). Adaptive flight path control of airborne wind energy systems. Energies, 13(3), [667]. https://doi.org/10.3390/en13030667