Turbulence Measured by Anemometers, Kites and Turbine Blade Strain

[+] Author and Article Information
P. A. Daniels

Dept. of Meteorology, University of Hawaii, Honolulu, HI 96822

J. Sol. Energy Eng 115(4), 226-230 (Nov 01, 1993) (5 pages) doi:10.1115/1.2930054 History: Received August 18, 1991; Revised January 15, 1993; Online June 06, 2008


Anemometer and strain guaged Tala kite wind data are analyzed with concurrent blade strain on a 600 kW wind turbine. While anemometer spectra drop at 1 Hz, the kite shows considerable energy up to several Hz. The rain flow count method identified discrete and nested cycles in the data. When registering a large amplitude cycle, the kite moved significantly from it’s no cycle position demonstrating that the kite actively seeks out and samples turbulence lumps over an area as opposed to a fixed anemometer. The kite simulated measured number of cycles and durations reasonably well while the anemometer failed.

Copyright © 1993 by The American Society of Mechanical Engineers
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