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RESEARCH PAPERS

Accurate Correlation of Wind Turbine Response With Wind Speed Using a New Characterization of Turbulent Wind

[+] Author and Article Information
J. R. Connell, R. L. George

Pacific Northwest Laboratory, Richland, WA 99352

J. Sol. Energy Eng 109(4), 321-329 (Nov 01, 1987) (9 pages) doi:10.1115/1.3268224 History: Received November 01, 1982; Online November 11, 2009

Abstract

The turbulence encountered by a point on a rotating wind turbine blade has characteristics that in some important respects are different from those measured by a stationary anemometer. The conventional one-peaked continuous spectrum becomes, broadly, a two-peaked spectrum that in addition contains a set of narrowband spikes of turbulence energy, one centered on the frequency of rotor rotation and the others centered on multiples of that frequency. The rotational sampling effect on wind spectra is quantified using measurements of wind velocity by anemometers on stationary crosswind circular arrays. Characteristics of fluctuating wind are compared to measured fluctuations of bending moments of the rotor blades and power output fluctuations of a horizontal-axis wind turbine at the same site. The wind characteristics and the correlations between wind fluctuations and wind turbine fluctuations provide a basis for improving turbine design, siting, and control.

Copyright © 1987 by ASME
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