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.
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, stability, 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: ||06 Oct 2012 08:05|
Actions (login required)