Control of flapwise vibrations in wind turbine blades using semi-active tuned mass dampers

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dc.contributor.author Arrigan, John
dc.contributor.author Pakrashi, Vikram
dc.contributor.author Basu, Biswajit
dc.contributor.author Nagarajaiah, Satish
dc.date.accessioned 2011-04-14T11:04:07Z
dc.date.available 2011-04-14T11:04:07Z
dc.date.copyright 2010
dc.date.issued 2011-04
dc.identifier.citation Arrigan, J., Pakrashi, V., Basu, B. and Nagarajaiah, S. (2011), Control of flapwise vibrations in wind turbine blades using semi-active tuned mass dampers. Structural Control and Health Monitoring, 18: n/a. doi: 10.1002/stc.404 en
dc.identifier.volume 18 en
dc.identifier.issn 1545-2255
dc.identifier.issn 1545-2263
dc.identifier.uri http://hdl.handle.net/10468/279
dc.identifier.doi 10.1002/stc.404
dc.description.abstract The increased size and flexibility of modern multi-Megawatt wind turbines has resulted in the dynamic behaviour of these structures becoming an important design consideration. The aim of this paper is to study the variation in natural frequency of wind turbine blades due to centrifugal stiffening and the potential use of semi-active tuned mass dampers (STMDs) in reducing vibrations in the flapwise direction with changing parameters in the turbine. The parameters considered were the rotational speed of the blades and the stiffness of the blades and nacelle. Two techniques have been employed to determine the natural frequency of a rotating blade. The first employs the Frobenius method to a rotating Bernoulli-Euler beam. These results are compared with the natural frequencies determined from an eigenvalue analysis of the dynamic model of the turbine including nacelle motion, which is developed in this paper. The model derived considers the structural dynamics of the turbine and includes the dynamic coupling between the blades and tower. The semi-active control system developed employs a frequency-tracking algorithm based on the short-time Fourier transform technique. This is used to continually tune the dampers to the dominant frequencies of the system. Numerical simulations have been carried out to study the effectiveness of the STMDs in  reducing flapwise vibrations in the system when variations occur in certain parameters ofthe turbine. Steady and turbulent wind loading has been considered. en
dc.description.sponsorship Marine Institute (Networking and Technology Transfer Initiative) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher John Wiley & Sons, Ltd. en
dc.relation.uri http://onlinelibrary.wiley.com/doi/10.1002/stc.404/abstract en
dc.rights © 2010 John Wiley & Sons, Ltd. This is the pre-peer reviewed version of the following article: Arrigan, J., Pakrashi, V., Basu, B. and Nagarajaiah, S. (2011), Control of flapwise vibrations in wind turbine blades using semi-active tuned mass dampers. Structural Control and Health Monitoring, 18: n/a. doi: 10.1002/stc.404 which has been published in final form at http://dx.doi.org/10.1002/stc.404 en
dc.subject Semi-active tuned mass dampers en
dc.subject Blade-tower interaction en
dc.subject.lcsh Wind turbines--Design and construction en
dc.subject.lcsh Blades en
dc.subject.lcsh Damping (Mechanics) en
dc.subject.lcsh Structural dynamics en
dc.title Control of flapwise vibrations in wind turbine blades using semi-active tuned mass dampers en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://publish.ucc.ie/researchprofiles/D012/vpakrashi en
dc.internal.authorcontactother Vikram Pakrashi, Civil Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: v.pakrashi@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2010-10-07T14:18:59Z
dc.description.version Submitted Version en
dc.internal.rssid 52678874
dc.contributor.funder Irish Research Council for Science Engineering and Technology en
dc.contributor.funder Marine Institute en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Structural Control and Health Monitoring en
dc.internal.copyrightchecked RoMEO. Journal website > Copyright Transfer agreement. en
dc.internal.IRISemailaddress v.pakrashi@ucc.ie en


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