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Energies 2015, 8(8), 8482-8496; doi:10.3390/en8088482

Measurements of the Aerodynamic Normal Forces on a 12-kW Straight-Bladed Vertical Axis Wind Turbine

Division of Electricity, Department of Engineering Sciences, Uppsala University, Box 534, Uppsala 751 21, Sweden
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Academic Editor: Frede Blaabjerg
Received: 5 June 2015 / Revised: 27 July 2015 / Accepted: 3 August 2015 / Published: 12 August 2015
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Abstract

The knowledge of unsteady forces is necessary when designing vertical axis wind turbines (VAWTs). Measurement data for turbines operating at an open site are still very limited. The data obtained from wind tunnels or towing tanks can be used, but have limited applicability when designing large-scale VAWTs. This study presents experimental data on the normal forces of a 12-kW straight-bladed VAWT operated at an open site north of Uppsala, Sweden. The normal forces are measured with four single-axis load cells. The data are obtained for a wide range of tip speed ratios: from 1.7 to 4.6. The behavior of the normal forces is analyzed. The presented data can be used in validations of aerodynamic models and the mechanical design for VAWTs. View Full-Text
Keywords: vertical axis turbine; wind turbine; force; measurement; accuracy; normal force; H-rotor; blades vertical axis turbine; wind turbine; force; measurement; accuracy; normal force; H-rotor; blades
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Dyachuk, E.; Rossander, M.; Goude, A.; Bernhoff, H. Measurements of the Aerodynamic Normal Forces on a 12-kW Straight-Bladed Vertical Axis Wind Turbine. Energies 2015, 8, 8482-8496.

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