scholarly journals The Effect of Control Strategy on Tidal Stream Turbine Performance in Laboratory and Field Experiments

Energies ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 1533 ◽  
Author(s):  
Carwyn Frost ◽  
Ian Benson ◽  
Penny Jeffcoate ◽  
Björn Elsäßer ◽  
Trevor Whittaker
Keyword(s):  
Control Strategy ◽  
Field Experiments ◽  
Turbine Performance ◽  
Tidal Stream ◽  
Tidal Stream Turbine

Demonstrating a Tidal Turbine Control Strategy at Laboratory Scale

2016 ◽  
Author(s):  
Magnus Harrold ◽  
Peter Bromley ◽  
Merin Broudic ◽  
David Clelland
Keyword(s):  
Control Strategy ◽  
Cost Effective ◽  
Scale Model ◽  
Turbine Performance ◽  
Controller Gain ◽  
Tidal Turbine ◽  
Tidal Stream ◽  
Commercial Device ◽  
Tidal Stream Turbine ◽  
Thrust Forces

Ahead of the installation of a commercial tidal stream turbine, a 1:30 scale model of the device was tested in a recirculating flume tank. This proved to be the first physical demonstration of the turbine’s unconventional control strategy, which limits the thrust forces on the device by allowing the rotor to enter an overspeed. The tests showed that this simple to implement concept of operation is a cost-effective and reliable means of managing the rotor thrust loads in energetic flows. Subsequent tests highlighted the importance of correctly calculating the controller gain parameter, otherwise detrimental turbine performance characteristics can be expected. When relating these results to that of the commercial device, there are a number of important differences associated with both the environment and scale of the model tests. Despite this, the results are considered encouraging, and provided confidence for the full-scale deployment.

scholarly journals A Review on Numerical Development of Tidal Stream Turbine Performance and Wake Prediction

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 79325-79337 ◽  
Author(s):  
Yuquan Zhang ◽  
Emmanuel Fernandez-Rodriguez ◽  
Jinhai Zheng ◽  
Yuan Zheng ◽  
Jisheng Zhang ◽  
...  
Keyword(s):  
Numerical Development ◽  
Turbine Performance ◽  
Tidal Stream ◽  
Tidal Stream Turbine

scholarly journals Wave–current interaction effects on tidal stream turbine performance and loading characteristics

2016 ◽  
Vol 14 ◽  
pp. 161-179 ◽  
Author(s):  
S.C. Tatum ◽  
C.H. Frost ◽  
M. Allmark ◽  
D.M. O’Doherty ◽  
A. Mason-Jones ◽  
...  
Keyword(s):  
Interaction Effects ◽  
Turbine Performance ◽  
Tidal Stream ◽  
Current Interaction ◽  
Tidal Stream Turbine

Influence of a velocity profile & support structure on tidal stream turbine performance

2013 ◽  
Vol 52 ◽  
pp. 23-30 ◽  
Author(s):  
A. Mason-Jones ◽  
D.M. O'Doherty ◽  
C.E. Morris ◽  
T. O'Doherty
Keyword(s):  
Velocity Profile ◽  
Support Structure ◽  
Turbine Performance ◽  
Tidal Stream ◽  
Tidal Stream Turbine

Simulation of Tidal Stream Turbine Working Near Free Surface

2013 ◽  
Vol 361-363 ◽  
pp. 291-295 ◽  
Author(s):  
Jun Wei Zhou ◽  
Da Zheng Wang
Keyword(s):  
Free Surface ◽  
Wave Height ◽  
Wave Surface ◽  
Turbine Efficiency ◽  
Turbine Performance ◽  
Tidal Stream ◽  
Wave Induced ◽  
Tidal Stream Turbine ◽  
The Relationship ◽  
Main Factor

The tidal stream kinetic energy can be abstracted by the horizontal axial turbine, and most concentrate closing to seaside, where the tidal stream turbine must work near the free surface. The interaction between wave surface and the turbine will affect the turbine performance. In this work, the performance of tidal stream turbine working beneath the free surface was simulated, and the wave was discussed. The results indicated that the turbine depth Fr number is the main factor that affects wave induced by the turbine. As the turbine depth Fr number is less than 1.0, the wave is not apparent, and as the Fr number increased, the wave height rose. By the analysis of turbine performance, it is discovered that the wave will influence turbine efficiency, but the relationship between wave height and turbine efficiency is not regular.

Experimental study of the wake homogeneity evolution behind a horizontal axis tidal stream turbine

2021 ◽  
Vol 111 ◽  
pp. 102644
Author(s):  
Zhi Zhang ◽  
Yuquan Zhang ◽  
Jisheng Zhang ◽  
Yuan Zheng ◽  
Wei Zang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Horizontal Axis ◽  
Tidal Stream ◽  
Tidal Stream Turbine

scholarly journals Multi-scale ocean response to a large tidal stream turbine array

2017 ◽  
Vol 114 ◽  
pp. 1160-1179 ◽  
Author(s):  
Michela De Dominicis ◽  
Rory O'Hara Murray ◽  
Judith Wolf
Keyword(s):  
Multi Scale ◽  
Ocean Response ◽  
Tidal Stream ◽  
Tidal Stream Turbine
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