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Contra-rotating marine current turbines : single point tethered floating system - stabilty and performance

Clarke, J.A. and Connor, G. and Grant, A.D. and Johnstone, C. and Ordonez-Sanchez, S. (2009) Contra-rotating marine current turbines : single point tethered floating system - stabilty and performance. In: 8th European Wave and Tidal Energy Conference, EWTEC 2009, 2009-09-07 - 2009-09-10, Uppsala, Sweden.

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    The Energy Systems Research Unit within the Department of Mechanical Engineering at the University of Strathclyde has developed a novel contra-rotating tidal turbine (CoRMaT). A series of tank and sea tests have led to the development and deployment of a small stand-alone next generation tidal turbine. Novel aspects of this turbine include its single point compliant mooring system, direct drive open to sea permanent magnet generator, and two contra-rotating sets of rotor blades. The sea testing of the turbine off the west coast of Scotland in the Sound of Islay is described; the resulting stability of a single-point tethered device and power quality from the direct drive generator is reported and evaluated. It is noted that reasonably good moored turbine stability within a real tidal stream can be achieved with careful design; however even quite small instabilities have an effect on the output electrical power quality. Finally, the power take-off and delivery options for a 250kW production prototype are described and assessed.

    Item type: Conference or Workshop Item (Paper)
    ID code: 8453
    Keywords: contra-rotating, stability, tidal, turbine, marine, current turbines, single point, tethered, floating system, performance, Mechanical engineering and machinery, Hydraulic engineering. Ocean engineering
    Subjects: Technology > Mechanical engineering and machinery
    Technology > Hydraulic engineering. Ocean engineering
    Department: Faculty of Engineering > Mechanical and Aerospace Engineering
    Related URLs:
    Depositing user: Ms Katrina May
    Date Deposited: 29 Jul 2009 16:44
    Last modified: 08 Dec 2013 12:15

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