Power Prediction of Airborne Wind Energy Systems Using Multivariate Machine Learning

Mostafa A. Rushdi, Ahmad A. Rushdi, Tarek N. Dief, Amr M. Halawa, Shigeo Yoshida, Roland Schmehl

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Abstract

Kites can be used to harvest wind energy at higher altitudes while using only a fraction of the material required for conventional wind turbines. In this work, we present the kite system of Kyushu University and demonstrate how experimental data can be used to train machine learning regression models. The system is designed for 7 kW traction power and comprises an inflatable wing with suspended kite control unit that is either tethered to a fixed ground anchor or to a towing vehicle to produce a controlled relative flow environment. A measurement unit was attached to the kite for data acquisition. To predict the generated tether force, we collected input–output samples from a set of well-designed experimental runs to act as our labeled training data in a supervised machine learning setting. We then identified a set of key input parameters which were found to be consistent with our sensitivity analysis using Pearson input–output correlation metrics. Finally, we designed and tested the accuracy of a neural network, among other multivariate regression models. The quality metrics of our models show great promise in accurately predicting the tether force for new input/feature combinations and potentially guide new designs for optimal power generation.
Original languageEnglish
Article number2367
Number of pages23
JournalEnergies
Volume13
Issue number9
DOIs
Publication statusPublished - 2020

Keywords

  • airborne wind energy
  • kite system
  • kite power
  • tether force
  • machine learning
  • neural network
  • power prediction
  • Power prediction
  • Neural network
  • Machine learning
  • Kite power
  • Airborne wind energy
  • Kite system
  • Tether force

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  • Datasets

    Towing test data of the Kyushu University kite system

    Rushdi, M. A. (Creator), Schmehl, R. (Creator), Dief, T. N. (Creator), Yoshida, S. (Creator), Fujimoto, D. (Creator) & Sawano, K. (Creator), TU Delft - 4TU Centre for research data, 2020

    Dataset

    Cite this

    Rushdi, M. A., Rushdi, A. A., Dief, T. N., Halawa, A. M., Yoshida, S., & Schmehl, R. (2020). Power Prediction of Airborne Wind Energy Systems Using Multivariate Machine Learning. Energies, 13(9), [2367]. https://doi.org/10.3390/en13092367