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Turbines for modular tidal current energy converters

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  • Kaufmann, Nicholas
  • Carolus, Thomas
  • Starzmann, Ralf

Abstract

The vast potential of ocean energies is of increasing interest. Harnessing marine currents driven by the tidal cycle have triggered the development of various power conversion systems. However, the comparably high levelized cost of electricity is still the main hindrance for a faster market penetration. The paper describes a novel strategy to decrease the cost: A number of small prefabricated turbines of low complexity form an arbitrary scalable array of turbines; a modular design of the key unit “turbine” allows an easy adaption to the tidal current velocity profile at a particular site; hydraulically optimized turbine blades ensure maximum annual energy production and minimum immersion depth. Results of the design efforts are a 4 m and a 6.3 m diameter horizontal axis free flow turbine with an identical drive train for a rated electrical power of 70 kW. Four turbines have been tested on a 30 m × 26 m trimaran placed for several months near the Falls of Lora in Scotland. The power yield fully confirmed the prediction. As an example, the annual electric energy production from such a turbine, placed in the Minas Passage area of the Bay of Fundy in Canada - an ideal site of harnessing tidal currents, is forecasted as 230 MWh.

Suggested Citation

  • Kaufmann, Nicholas & Carolus, Thomas & Starzmann, Ralf, 2019. "Turbines for modular tidal current energy converters," Renewable Energy, Elsevier, vol. 142(C), pages 451-460.
    • Handle: RePEc:eee:renene:v:142:y:2019:i:c:p:451-460
    DOI: 10.1016/j.renene.2019.04.120
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    References listed on IDEAS

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    1. Wustenhagen, Rolf & Wolsink, Maarten & Burer, Mary Jean, 2007. "Social acceptance of renewable energy innovation: An introduction to the concept," Energy Policy, Elsevier, vol. 35(5), pages 2683-2691, May.
    2. Uihlein, Andreas & Magagna, Davide, 2016. "Wave and tidal current energy – A review of the current state of research beyond technology," Renewable and Sustainable Energy Reviews, Elsevier, vol. 58(C), pages 1070-1081.
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    Cited by:

    1. Zhen Qin & Xiaoran Tang & Yu-Ting Wu & Sung-Ki Lyu, 2022. "Advancement of Tidal Current Generation Technology in Recent Years: A Review," Energies, MDPI, vol. 15(21), pages 1-18, October.
    2. Guerra, Maricarmen & Hay, Alex E., 2024. "Field observations of the wake from a full-scale tidal turbine array," Renewable Energy, Elsevier, vol. 226(C).
    3. Akbari, Negar & Jones, Dylan & Arabikhan, Farzad, 2021. "Goal programming models with interval coefficients for the sustainable selection of marine renewable energy projects in the UK," European Journal of Operational Research, Elsevier, vol. 293(2), pages 748-760.
    4. Guerra, Maricarmen & Hay, Alex E. & Karsten, Richard & Trowse, Gregory & Cheel, Richard A., 2021. "Turbulent flow mapping in a high-flow tidal channel using mobile acoustic Doppler current profilers," Renewable Energy, Elsevier, vol. 177(C), pages 759-772.

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