Results 1 to 10 of about 1,754 (85)

Detection of wind turbines rotary motion by birds: A matter of speed and contrast

open access: yesConservation Science and Practice, Volume 5, Issue 10, October 2023., 2023
Some bird species may detect low‐speed rotation on wind turbines as static. A low contrast between the wind turbine and its background increases the rotation speed treshold at which this phenomenon appears. Automatic Detection Systems used to slow down wind turbines when birds are approaching may thus be counterproductive.
Constance Blary   +5 more
wiley   +1 more source

Windfarm collisions in medium‐sized raptors: even increasing populations can suffer strong demographic impacts

open access: yesAnimal Conservation, Volume 26, Issue 2, Page 264-275, April 2023., 2023
We demonstrate on a short‐lived, endangered raptor species, the Lesser kestrel, that additional mortality due to windfarms can have a negative impact on population growth rate. Although the impact is currently moderate, the forecasted decrease in immigration rate, and increase in the number of windfarms at a wider scale, may threaten the recovery of ...
O. Duriez   +4 more
wiley   +1 more source

Wind Turbines, Public Acceptance, and Electoral Outcomes

open access: yesSwiss Political Science Review, Volume 28, Issue 4, Page 712-727, December 2022., 2022
Abstract Despite a widespread public support for wind energy in general, wind turbine proposals attract a considerable amount of public opposition. At a time of political commitments to building more wind turbines for climate risk mitigation, we study the potential causes of this opposition and its electoral effects.
Resul Umit, Lena Maria Schaffer
wiley   +1 more source

Distance to hedgerows drives local repulsion and attraction of wind turbines on bats: Implications for spatial siting

open access: yesJournal of Applied Ecology, Volume 59, Issue 8, Page 2142-2153, August 2022., 2022
This study provides empirical evidence that wind turbines close to optimal habitats such as hedgerows strongly repel bats, while wind turbines located farther away in open areas could attract them. Increased risks of collisions and habitat losses near edges strengthen the importance of keeping wind turbines at a sufficient distance from woody edges (e ...
Camille Leroux   +4 more
wiley   +1 more source

Génératrice à aimants permanents à flux axial à grand diamètre avec entrefer immergé [PDF]

open access: yes, 2013
Cette étude propose une méthode de modélisation et de conception adaptée aux machines à flux axial et à Double Stator (poly-entrefer) destinée à être intégrée comme génératrice pour une hydrolienne RIM-DRIVEN de grande puissance.
BENBOUZID, Mohamed   +3 more
core   +3 more sources

Assessment of Turbulence Models for Flow Simulation around a Wind Turbine Airfoil

open access: yesModelling and Simulation in Engineering, Volume 2011, Issue 1, 2011., 2011
This investigation focuses on the application of the computational fluid dynamics tool FLUENT to the study of flows over the NACA 63–415 airfoil at various angles of attack. With the aim of selecting the most suitable turbulence model to simulate flow around ice‐accreted airfoils, this work concentrates on assessing the prediction capabilities of ...
Fernando Villalpando   +3 more
wiley   +1 more source

Power Quality Enhancement in Electricity Grids with Wind Energy Using Multicell Converters and Energy Storage [PDF]

open access: yes, 2019
In recent years, the wind power industry is experiencing a rapid growth and more wind farms with larger size wind turbines are being connected to the power system.
Allali, Ahmed   +5 more
core   +2 more sources

Canadian Estimate of Bird Mortality Due to Collisions and Direct Habitat Loss Associated with Wind Turbine Developments [PDF]

open access: yes, 2013
We estimated impacts on birds from the development and operation of wind turbines in Canada considering both mortality due to collisions and loss of nesting habitat.
Andrea C. Pomeroy   +3 more
core   +2 more sources

Etude Comparative des Techniques de Traitement du Signal Non- Stationnaires Dédiées au Diagnostic des Génératrices Asynchrones dans les Eoliennes Offshores et les Hydroliennes [PDF]

open access: yes, 2014
L’amélioration de la disponibilité et de la fiabilité des éoliennes offshores et des systèmes de récupération de l’énergie des courants marins implique la nécessité de minimiser et de prévoir les opérations de maintenance.
BENBOUZID, Mohamed   +3 more
core   +5 more sources

Etude numérique et expérimentale de l'écoulement autour d'un rotor éolien [PDF]

open access: yes, 2013
An improved model of an actuator surface is proposed, representing the flow around a wind turbine. This model was developed in conjunction with a Navier-Stokes solver using a blade element method for the calculation of power and wake development.
DOBREV, Ivan   +2 more
core   +4 more sources

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