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 language | English |
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Title of host publication | 22nd IFAC World Congress |
Subtitle of host publication | Proceedings |
Editors | Hideaki Ishii, Yoshio Ebihara, Jun-ichi Imura, Masaki Yamakita |
Place of Publication | Laxenburg |
Pages | 5419-5424 |
Number of pages | 6 |
Volume | 56-2 |
DOIs | |
Publication status | Published - 22 Nov 2023 |
Event | IFAC World Congress 2023: The 22nd World Congress of the International Federation of Automatic Control - Yokohama, Japan Duration: 9 Jul 2023 → 14 Jul 2023 Conference number: 22 https://www.ifac2023.org/ |
Publication series
Name | IFAC-PapersOnLine |
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Publisher | International Federation of Automatic Control (IFAC) |
ISSN (Print) | 2405-8963 |
Conference
Conference | IFAC World Congress 2023 |
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Country/Territory | Japan |
City | Yokohama |
Period | 9/07/23 → 14/07/23 |
Internet address |
Keywords
- torque estimation
- flow speed estimation
- tidal turbine control
- Kalman filtering techniques
- Newton-Rapson method
- tidal turbine modelling
- time-varying disturbance