Turbosets used in power generation industry are frequently placed on flexible foundations, which significantly influence the overall dynamics. Establishment of structural models that capture the rotor and foundation effects reliably using finite element modeling or modal analysis is difficult because of model complexity and/or costs involved. This paper presents a method to extract modal parameter information of a turboset using frequency response function data recorded during high speed balancing. The main advantage of the present method over the others is the low cost and small effort involved, so that it is of practical use in an industrial setting. A real life example dealing with parameter extraction for a large generator rotor is presented to demonstrate its implementation.
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September 2008
Technical Briefs
Modal Parameter Extraction of a Turboset From High Speed Balance Data
Anoop K. Dhingra,
Anoop K. Dhingra
Mechanical Engineering Department,
e-mail: dhingra@uwm.edu
University of Wisconsin
, Milwaukee, WI 53201
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Juan I. Hidalgo
Juan I. Hidalgo
Mechanical Engineering Department,
University of Wisconsin
, Milwaukee, WI 53201
Search for other works by this author on:
Anoop K. Dhingra
Mechanical Engineering Department,
University of Wisconsin
, Milwaukee, WI 53201e-mail: dhingra@uwm.edu
Juan I. Hidalgo
Mechanical Engineering Department,
University of Wisconsin
, Milwaukee, WI 53201J. Eng. Gas Turbines Power. Sep 2008, 130(5): 054503 (5 pages)
Published Online: June 12, 2008
Article history
Received:
September 26, 2006
Revised:
April 5, 2008
Published:
June 12, 2008
Citation
Dhingra, A. K., and Hidalgo, J. I. (June 12, 2008). "Modal Parameter Extraction of a Turboset From High Speed Balance Data." ASME. J. Eng. Gas Turbines Power. September 2008; 130(5): 054503. https://doi.org/10.1115/1.2938275
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