Measurement based flow speed estimation for tidal turbine control

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Abstract

This work aims to explore effective online torque estimation techniques for tidal turbine control under varying flow conditions. A modified Kalman filter with adaptive features is developed to estimate hydrodynamic torque from a tidal turbine's available measurements, based on which a modified Newton-Rapson method is employed to calculate the effective flow speed. The rotor speed reference signal required for tidal turbine control can be produced using the estimated torque and flow speed. The Kalman filter model is constructed using on a low frequency lumped parameter model of a horizontal-axis, fixed-pitch, two-bladed variable speed tidal turbine, established from a fully characterised model of a real turbine. The adaptive feature of the Kalman filter allows the tracking of the spatial-temporal variations of the effective flow speed caused by turbulence. Simulation studies are implemented to test the developed algorithm over the full envelope of the flow speeds.
Original languageEnglish
Title of host publication22nd IFAC World Congress
Subtitle of host publicationProceedings
EditorsHideaki Ishii, Yoshio Ebihara, Jun-ichi Imura, Masaki Yamakita
Place of PublicationLaxenburg
Pages5419-5424
Number of pages6
Volume56-2
DOIs
Publication statusPublished - 22 Nov 2023
EventIFAC World Congress 2023: The 22nd World Congress of the International Federation of Automatic Control - Yokohama, Japan
Duration: 9 Jul 202314 Jul 2023
Conference number: 22
https://www.ifac2023.org/

Publication series

NameIFAC-PapersOnLine
PublisherInternational Federation of Automatic Control (IFAC)
ISSN (Print)2405-8963

Conference

ConferenceIFAC World Congress 2023
Country/TerritoryJapan
CityYokohama
Period9/07/2314/07/23
Internet address

Keywords

  • torque estimation
  • flow speed estimation
  • tidal turbine control
  • Kalman filtering techniques
  • Newton-Rapson method
  • tidal turbine modelling
  • time-varying disturbance

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