Resonant Vibrations Resulting from the Re-Engineering of a Constant-Speed 2-Bladed Turbine to a Variable-Speed 3-Bladed Turbine.
Author: Fleming, P.; Wright, A. D.; Finersh, L. J.
Pages/Volumes: 17 pp.
Publication Year: 2010
Notes: Presented at 49th AIAA Aerospace Sciences Meeting; Orlando, Florida; January 4-7, 2011
Document Type: Conference Paper
NTIS/GPO Number: 1001431
Subject Code Description: Wind Energy
Abstract: The CART3 (Controls Advanced Research Turbine, 3-bladed) at the National Wind Technology Center has recently been converted from a 2-bladed constant speed machine to a 3-bladed variable speed machine designed specically for controls research. The purpose of this conversion was to develop an advanced controls field-testing platform which has the more typical 3-bladed configuration. A result of this conversion was the emergence of several resonant vibrations, some of which initially prevented operation of the turbine until they could be explained and resolved. In this paper, the investigations into these vibrations are presented as 'lessons-learned'. Additionally, a frequency-domain technique called waterfall plotting is discussed and its usefulness in this research is illustrated.
Accession Number: 50009
Library Notes: NPL-1101 REV
Report Numbers: CP-5000-50009
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