Results 11 to 20 of about 978 (186)

Design methodology of permanent magnet generators for fixed-pitch tidal turbines with overspeed power limitation strategy

open access: yesJournal of Ocean Engineering and Science, 2020
This paper deals with a design methodology of permanent magnets (PM) generators used for fixed-pitch tidal turbines in a marine renewable energy context.
Sofiane Djebarri   +3 more
doaj   +1 more source

Hydrodynamic impact and power production of tidal turbines in a storm surge barrier

open access: yesInternational Marine Energy Journal, 2020
To estimate the impact on energy production and environment of tidal turbines placed in the Eastern Scheldt Storm Surge Barrier a Computational Fluid Dynamics (CFD) study has been carried out on the additional head differences induced by the turbines ...
Thomas O'Mahoney   +3 more
doaj   +1 more source

Optimization of a Grid-Connected Microgrid Using Tidal and Wind Energy in Cook Strait

open access: yesFluids, 2021
The Cook Strait in New Zealand is an ideal location for wind and tidal renewable sources of energy due to its strong winds and tidal currents. The integration of both technologies can help to avoid the detrimental effects of fossil fuels and to reduce ...
Navid Majdi Nasab   +3 more
doaj   +1 more source

Influence of inlet line shape on hydrodynamic performance of tidal energy diffuser

open access: yesXibei Gongye Daxue Xuebao, 2021
The installation of diffuser is an important way to improve the efficiency of tidal turbines, which is promising for engineering practice. In this paper, the open source code OpenFOAM is used as the platform.

doaj   +1 more source

Study of a Bi-Vertical Axis Turbines Farm Using the Actuator Cylinder Method

open access: yesEnergies, 2021
Vertical axis turbines, which extract kinetic energy from currents, can produce electricity independently from a current’s direction. Hence, this type of turbines raises interest for harvesting energy from tidal currents, where flow changes direction ...
Laurie Jégo, Sylvain S. Guillou
doaj   +1 more source

Blockage Corrections for Tidal Turbines—Application to an Array of Turbines in the Alderney Race

open access: yesEnergies, 2022
Tidal turbines are located in shallow water depths in comparison to their dimensions (15 m-diameter turbines in 40 m depths, typically). Constrained vertically by the water depth and laterally by neighbouring turbines, the flow within a tidal farm is ...
Nasteho Djama Dirieh   +3 more
doaj   +1 more source

Modelling Tidal Stream Turbines [PDF]

open access: yes, 2015
This book provides insights on a broad spectrum of renewable and sustainable energy technologies from the world’s leading experts. It highlights the latest achievements in policy, research and applications, keeping readers up-to-date on progress in this rapidly advancing field.
Frost, Carwyn   +4 more
openaire   +2 more sources

The Efficiency of a Fence of Tidal Turbines in the Alderney Race: Comparison between Analytical and Numerical Models

open access: yesEnergies, 2021
Assessing the efficiency of a tidal turbine array is necessary for adequate device positioning and the reliable evaluation of annual energy production. Array efficiency depends on hydrodynamic characteristics, operating conditions, and blockage effects ...
Jérôme Thiébot   +3 more
doaj   +1 more source

Thermal Cycling in Converter IGBT Modules with Different Cooling Systems in Pitch- and Active Stall-Controlled Tidal Turbines

open access: yesEnergies, 2021
This paper compares active and passive cooling systems in tidal turbine power electronic converters. The comparison is based on the lifetime of the IGBT (insulated gate bipolar transistor) power modules, calculated from the accumulated fatigue due to ...
Faisal Wani   +3 more
doaj   +1 more source

Numerical Simulations of the Effects of a Tidal Turbine Array on Near-Bed Velocity and Local Bed Shear Stress

open access: yesEnergies, 2016
We apply a three-dimensional hydrodynamic model to consider the potential effects of energy extraction by an array of tidal turbines on the ambient near-bed velocity field and local bed shear stress in a coastal channel with strong tidal currents.
Philip A. Gillibrand   +2 more
doaj   +1 more source

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