Title

Influence of the Magnitude of the Angle of Attack on the Voltage Produced by a Miniature Wind Turbine

Document Type

Article

Publication Date

2011

Publication Source

World Transactions on Engineering and Technology Education (WTE&TE)

Volume

9

Issue

3

Inclusive pages

155-160

Publisher

UNESCO International Centre for Engineering Education

Place of Publication

Australia

ISBN/ISSN

1446-2257

Peer Reviewed

yes

Abstract

Miniature wind turbines were used to investigate the influence of the magnitude of the inclination (angle of attack) of turbine blades on the power produced by a wind turbine. The same turbine and the same set of blades were utilised in all experiments. Thirteen different inclinations were tested through a variety of wind speeds generated by a household fan that had three different fan speeds: low, medium and high. It was found that the voltage output varied greatly with the angle of inclination. Four ranges of inclination were identified: at very small angles and at very large angles, the turbine generated no output. In intermediate ranges, increasing the angle led to continuous increases in output until a peak value was reached; thereafter, further increases in inclinations led to continuous decreases in output. The inclinations at which maximum outputs were measured varied with the distance between the fan and the turbine and with the speed setting of the fan. However, all the inclinations where peak voltages occurred were clustered between 200 and 300 relative to the vertical axis

Keywords

wind turbines, magnitute of angles

Disciplines

Engineering | Mechanical Engineering | Other Mechanical Engineering