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

Clarke, Joseph Andrew and Connor, Gary and Grant, Andrew and Johnstone, Cameron and Ordonez Sanchez, Stephanie Eugenia (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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Abstract

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, Mechanical Engineering, Ocean Engineering, Energy Engineering and Power Technology, Renewable Energy, Sustainability and the Environment
Subjects: Technology > Mechanical engineering and machinery
Technology > Hydraulic engineering. Ocean engineering
Department: Faculty of Engineering > Mechanical and Aerospace Engineering
Depositing user: Ms Katrina May
Date Deposited: 29 Jul 2009 15:44
Last modified: 23 Jul 2015 15:25
Related URLs:
URI: http://strathprints.strath.ac.uk/id/eprint/8453

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