Open AccessExperimental test of variable loads on a vertical-axis wind turbine
Author(s) -
Livia Brandetti,
Delphine De Tavernier,
Bruce LeBlanc,
Carlos Ferreira
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1618/3/032037
Subject(s) - inflow , vertical axis wind turbine , wind tunnel , wind speed , turbine , wake , aerodynamics , hypersonic wind tunnel , strain gauge , rotor (electric) , marine engineering , flow (mathematics) , wind direction , structural engineering , engineering , aerospace engineering , meteorology , mechanics , mechanical engineering , physics
The paper presents an experimental study of applying variable loads on a vertical-axis wind turbine (VAWT). The experiment is conducted in an open-jet wind tunnel on a two-bladed Darrieus VAWT equipped with active individual blade pitch control. Variable loads are achieved by dynamically changing the pitch angle of the individual blades and by keeping the wind speed of the tunnel constant. The blade loads are measured using strain gages and the flow velocity is measured upwind and downwind of the rotor using a hotwire. Dynamic inflow phenomena are clearly visible both in the turbine loads and in the velocity field. A time delay based upon the flow convection in the wake is identified. It results that the induction of the turbine can be controlled by changing the pitch of the blades. The experimental database allows to validate a new dynamic inflow model for VAWT and will be made publicly available for research purposes.