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Title: Using a new characterization of turbulent wind for accurate correlation of wind turbine response with wind speed

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 narrow-band 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. 6 refs., 11 figs., 1 tab.

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
OSTI Identifier:
6060322
Report Number(s):
PNL-6283
ON: DE88001453
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Technical Report
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; WIND TURBINES; DYNAMIC LOADS; TURBULENCE; FATIGUE; ROTATION; WIND; MACHINERY; MECHANICAL PROPERTIES; MOTION; TURBINES; TURBOMACHINERY; 170602* - Wind Energy Engineering- Turbine Design & Operation

Citation Formats

Connell, J R, and George, R L. Using a new characterization of turbulent wind for accurate correlation of wind turbine response with wind speed. United States: N. p., 1987. Web. doi:10.2172/6060322.
Connell, J R, & George, R L. Using a new characterization of turbulent wind for accurate correlation of wind turbine response with wind speed. United States. https://doi.org/10.2172/6060322
Connell, J R, and George, R L. 1987. "Using a new characterization of turbulent wind for accurate correlation of wind turbine response with wind speed". United States. https://doi.org/10.2172/6060322. https://www.osti.gov/servlets/purl/6060322.
@article{osti_6060322,
title = {Using a new characterization of turbulent wind for accurate correlation of wind turbine response with wind speed},
author = {Connell, J R and George, R L},
abstractNote = {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 narrow-band 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. 6 refs., 11 figs., 1 tab.},
doi = {10.2172/6060322},
url = {https://www.osti.gov/biblio/6060322}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 1987},
month = {Tue Sep 01 00:00:00 EDT 1987}
}