Results 51 to 60 of about 595,257 (320)

Optimal power extraction of a two-stage tidal turbine system based on backstepping disturbance rejection control

open access: yes, 2021
This paper investigates the optimal power generation control for a two-stage horizontal-axis tidal turbine system based on backstepping disturbance rejection control (BDRC), which is a new control framework for high-order nonlinear systems.
Xiu-xing Yin, Xiaowei Zhao
semanticscholar   +1 more source

Application of a multibeam echosounder to document changes in animal movement and behaviour around a tidal turbine structure

open access: yesICES Journal of Marine Science, 2021
Changes in animal movement and behaviour at fine scales (tens of metres) in immediate proximity to tidal stream turbine structures are largely unknown and have implications for risks of animal collision with turbine blades.
B. Williamson   +3 more
semanticscholar   +1 more source

Strain gauge measurements on a full scale tidal turbine blade

open access: yesRenewable Energy, 2021
The development of tidal energy converters, and particularly floating tidal energy converters, is an area of increased development in recent years. Testing of a floating tidal energy device over winter 2017/18 led to an opportunity to record and examine ...
Thomas Lake   +7 more
semanticscholar   +1 more source

Deployment characterization of a floatable tidal energy converter on a tidal channel, Ria Formosa, Portugal [PDF]

open access: yes, 2018
This paper presents the results of a pilot experiment with an existing tidal energy converter (TEC), Evopod 1 kW floatable prototype, in a real test case scenario (Faro Channel, Ria Formosa, Portugal).
A. Pacheco   +38 more
core   +2 more sources

An optimal tuning strategy for tidal turbines [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
Tuning wind and tidal turbines is critical to maximizing their power output. Adopting a wind turbine tuning strategy of maximizing the output at any given time is shown to be an extremely poor strategy for large arrays of tidal turbines in channels. This ‘impatient-tuning strategy’ results in far lower power output, much higher structural loads and ...
openaire   +2 more sources

Numerical simulations of biofouling effects on the tidal turbine hydrodynamic

open access: yesInternational Marine Energy Journal, 2018
Biofouling by benthic organisms must be considered for tidal turbine operation and maintenance because it modifies hydrodynamics (drag and resistance) and could be detrimental to the turbine performance.
A. Rivier   +3 more
doaj   +1 more source

Turbine sound may influence the metamorphosis behaviour of estuarine crab megalopae. [PDF]

open access: yesPLoS ONE, 2012
It is now widely accepted that a shift towards renewable energy production is needed in order to avoid further anthropogenically induced climate change. The ocean provides a largely untapped source of renewable energy.
Matthew K Pine   +2 more
doaj   +1 more source

Hydrodynamic Performance Analysis on Different Airfoils of Straight Blade H Type of Vertical Axis Tidal Current Energy Turbine

open access: yesMATEC Web of Conferences, 2016
Airfoil is a key factor that influences the hydrodynamic performance of vertical axis tidal current energy turbine. In order to explore the influences from the runner’s blade airfoil towards its hydrodynamic performance, three-dimensional unsteady flow ...
Kan Kan   +5 more
doaj   +1 more source

Lifetime Analysis of IGBT Power Modules in Passively Cooled Tidal Turbine Converters

open access: yesEnergies, 2020
Thermal cycling is one of the major reasons for failure in power electronic converters. For submerged tidal turbine converters investigating this failure mode is critical in improving the reliability, and minimizing the cost of energy from tidal turbines.
Faisal Wani   +6 more
doaj   +1 more source

On the impact of waves and turbulence on the power fluctuations and wake structure of a tidal-stream turbine

open access: yesThe Physics of Fluids, 2023
Anticipating the power output of tidal-stream turbines (TSTs) is relevant for its technological advance and success. Therefore, it is important to clarify the behavior of TSTs under tidal-stream environments, which include both waves and currents.
E. Fernández-Rodríguez
semanticscholar   +1 more source

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