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Tidal stream turbines: With or without a Gearbox?
Ocean Engineering, 2018Abstract This paper proposes a review-based comparative study addressing the critical issue of tidal stream turbine drivetrain options. Indeed, tidal stream turbines are still in development stages with few industrial project deployments. Their technology is not as mature as wind turbine technology, while facing immersion constraints where have to ...
Khalil Touimi +2 more
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Characterisation of turbulent flow and the wake of a tidal stream turbine in proximity to a ridge
Proceedings of the European Wave and Tidal Energy Conference, 2023Fast tidal currents are generally found in shallow water depths where tidal turbines can be deployed to operate. In complex environments in which there is an irregular bathymetry, seabed shape changes can induce pressure gradients that accelerate or ...
S. Hurubi +4 more
semanticscholar +1 more source
Numerical Investigation of an Optimised Horizontal Axis Tidal Stream Turbine
Volume 10: Ocean Renewable Energy, 2019Abstract A tidal stream turbine was designed using one of the optimised hydrofoils, whose lift-to-drag ratio at an angle of attack of 5.2 degrees was 4.5% higher than that of the reference hydrofoil. The incompressible Reynolds-averaged Navier Stokes equations in steady state were solved using k-ω (SST) turbulence model for the reference
Sheshtawy, Hassan El +3 more
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The Physics of Fluids
The rational layout of tidal stream turbines (TSTs) is beneficial for making full use of tidal stream energy. It is essential to consider the wake radius and velocity distribution for determining the spacing between the TSTs.
Beibei Wei +3 more
semanticscholar +1 more source
The rational layout of tidal stream turbines (TSTs) is beneficial for making full use of tidal stream energy. It is essential to consider the wake radius and velocity distribution for determining the spacing between the TSTs.
Beibei Wei +3 more
semanticscholar +1 more source
IEEE Transactions on Circuits and Systems - II - Express Briefs
A novel redundant channels-based sliding mode control (SMC) strategy is proposed to overcome the adverse effects of packet dropouts during signal transmission of tidal stream turbine system.
Runkun Li +4 more
semanticscholar +1 more source
A novel redundant channels-based sliding mode control (SMC) strategy is proposed to overcome the adverse effects of packet dropouts during signal transmission of tidal stream turbine system.
Runkun Li +4 more
semanticscholar +1 more source
Journal of Physics: Conference Series
The fault diagnosis of a Tidal Stream Turbine (TST) blade impact fault benefits its stable operation. However, when the stream velocity changes, it is hard to distinguish between different fault severities directly by observing the changes in the signal ...
Zhen Wu, Tian-zhen Wang
semanticscholar +1 more source
The fault diagnosis of a Tidal Stream Turbine (TST) blade impact fault benefits its stable operation. However, when the stream velocity changes, it is hard to distinguish between different fault severities directly by observing the changes in the signal ...
Zhen Wu, Tian-zhen Wang
semanticscholar +1 more source
Reliability analysis of rotor blades of tidal stream turbines
Reliability Engineering & System Safety, 2014Abstract Tidal stream turbines are used for converting kinetic energy of tidal currents into electricity. There are a number of uncertainties involved in the design of such devices and their components. To ensure safety of the turbines these uncertainties must be taken into account.
Val, Dimitri V. +2 more
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Simulation of Tidal Stream Turbine Working Near Free Surface
Applied Mechanics and Materials, 2013The 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.
Jun Wei Zhou, Da Zheng Wang
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Optimization and Flow Analysis of Ducted Tidal Stream Turbine
Advanced Materials Research, 2013Efficiency of the tidal stream turbine with thin-wall axisymmetric ducts was numerically simulated. The ducts design parameters of diffuser curves, expansion ratio and duct length were simply optimized. The results showed that the duct of second order diffuser curve, expansion ratio of 2.25 and a length-diameter ratio of 1.2 has the best performance ...
Jun Wei Zhou, Da Zheng Wang, Ya Nan Li
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