Semi-active vibration control of wind turbine blades using a time-frequency approach
Citation:
John Arrigan, 'Semi-active vibration control of wind turbine blades using a time-frequency approach', [thesis], Trinity College (Dublin, Ireland). Department of Civil, Structural and Environmental Engineering, 2010, pp 189Download Item:
Abstract:
This thesis proposes the use of structural control devices to mitigate the response of wind
turbines, particularly the blades. Theoretical and experimental investigations have been
carried out to ascertain the effectiveness of passive and semi-active dampers in controlling the
response of wind turbines. A structural dynamic model was formulated using Lagrange's Equations taking account of the coupling between the blades and tower, and the centrifugal stiffening which occurs due to blade rotation. A model for both flapwise and edgewise vibrations was developed. Dampers were added to the turbine model in the form of Tuned Mass Dampers (TMDs), or equivalent Tuned Liquid Dampers (TLDs), represented by mass-spring-dashpot systems. The effectiveness of these passive devices in controlling the dynamic response of the turbine was studied in detail.
Author: Arrigan, John
Advisor:
Basu, BiswajitQualification name:
Doctor of Philosophy (Ph.D.)Publisher:
Trinity College (Dublin, Ireland). Department of Civil, Structural and Environmental EngineeringNote:
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