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Strain Response of a Wind Turbine Tower as a Function of Nacelle Orientation

Authors:
Jeffrey Bas
Rupp Carriveau
Shaohong Cheng
Tim Newson

Keywords: Wind Energy; SHM; Strain Response; Wind Turbine Tower

Abstract:
A land based 2.3 MW horizontal axis wind turbine steel supporting tower was instrumented with a Fiber Braggs Grating Strain array. The turbine was subjected to forced yawing of the nacelle during periods of low wind in order to isolate a baseline structural response. The strain experienced in the tower was presented as a function of yaw angle, and was shown to vary in a sinusoidal manner as a response to the eccentric loading condition present at the nacelle-tower interface. The yaw-strain baseline was shown to have strong inter-sensor cross correlation and is discussed in the context of a healthy structural response record with possible future utilization in SHM schemes.

Pages: 12 to 18

Copyright: Copyright (c) IARIA, 2012

Publication date: March 25, 2012

Published in: conference

ISSN: 2308-4154

ISBN: 978-1-61208-191-5

Location: St. Maarten, The Netherlands Antilles

Dates: from March 25, 2012 to March 30, 2012