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VAWT with Controlled Blades: Influence of Wake of One Turbine on Power Coefficient of the Next Turbine

type de publication      communication internationale avec actes publiés
date de publication 2013
auteur(s) Bayeul-Laine Annie-Claude; Simonet Sophie; Bois Gérard
conférence 5thIC-EPSMSO
     dates de 03-07-2013 à 06-07-2013
     lieu Athènes, Grèce
     nom des actes 5thIC-EPSMSO
ISBN / ISSN 978-618-80527
résumé Power production from wind turbines is affected by several conditions like wind speed, turbine speed, turbine design, turbulence, changes of wind direction, wake of previous turbines. These conditions are not always optimal and have negative effects on most turbines. The present wind turbine is a small one which allows to be used on roofs or in gardens to light small areas like publicity boards, parkings, roads or for water pumping, heating... This turbine is less affected by these conditions because the blades combine a rotating movement around each own axis and around the main turbine’s one. Due to this combination of movements, flow around this turbine is more optimized than classical Darrieus turbines. It has been shown in previous studies that the best configuration was obtained with straight blades, a blade stager angle comprised between 0 and 8 degrees and a non-dimensional velocity equal to 0.4 for a very good power coefficient of 0.38 in case of one VAWT. The present study points up the influence of the position of each VAWT in a group of three turbines and of the distances between turbines. It deals on global and local performances of these turbines.
mots clés Numerical simulation, unsteady calculations, VAWT, vertical axis, wind turbine, wind turbine arrays
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