Vibration Mitigation of Wind Turbine Towers with Tuned Mass Dampers

Altay, Okyay; Taddei, Francesca; Butenweg, Christoph; Klinkel, Sven

doi:10.1007/978-3-319-08413-8_12

Cited by 16 publications

(7 citation statements)

References 10 publications

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“…In order to reduce the effects of the resonance phenomenon (alternate variation of the top displacement, which increase in time) described in the previous Sections, two different solutions have been considered: (i) the installation of a damping device and (ii) the modification of the steel tower height, resulting in a change of the eigenfrequencies. In literature, the use of active or passive mass dampers is described [33,34]. In this work, as a first solution, a TMD is considered.…”

Section: Mitigation Of Vibrationmentioning

confidence: 99%

Resonance of steel wind turbines: Problems and solutions

et al. 2021

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Section: Mitigation Of Vibrationmentioning

confidence: 99%

Resonance of steel wind turbines: Problems and solutions

et al. 2021

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“…In diesem Beitrag wird vor allem auf die Eigendämpfung des Flüssigkeitstilgers selbst sowie auf den Einfluss dieser Dämpfung auf das schwingende Hauptsystem eingegangen. Für eine effektive Wirkung des Schwingungsdämpfers ist die Abstimmung seiner dynamischen Parameter auf die Eigenschaften des Hauptsystems (Schornsteine, Windkraftanlagen) essenziell [11, 13, 15, 16, 17]. Meist werden hierfür die Abstimmungskriterien nach D EN H ARTOG angewendet [10].…”

Section: Dämpfungunclassified

Dämpfungsverhalten unterschiedlicher Fluide in einem Flüssigkeitstilgersystem

Schellander¹,

Strauß²

2016

Bautechnik

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Damping behavior of different fluids used for a Tuned Liquid Column Damper SystemTuned liquid column dampers (TLCD) represent a good alternative to other commonly used damping systems applied on engineering structures. The use of an additional mass causes a contrary motion in relation to the main oscillating system. This contrary motion enables an efficient way to mitigate unwanted structural vibrations. To obtain high damping efficiencies certain parameters of the TLCD must be optimized and adjusted to the main system. Important parameters would be the mass -m, the eigenfrequency of the damper f T , the stiffness and of course the damping of the system itself. The theoretical and experimental investigations of certain parameters are the aim of this contribution. The main focus was on the damping term of the TLCD. Since it is strongly dependent on the rheological parameters of the fluid, such as viscosity, shear rates, density etc. different fluids were tested and after evaluation compared. To execute these experiments, a test stand has been designed and built. So the main aim of this research work is to theoretically explain fundamental fluid parameters and in a further step to show how a change of these parameters changes the damping behavior of the TLCD.

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“…In the aspect of using TMD, Stewart and Lackner [14] examined the performance of tuned mass damper (TMD) on the vibration control of wind turbines, and the results demonstrated that the TMD could reduce tower fatigue load efficiently, particularly in side-to-side directions. Altay et al [15] utilized TMD to mitigate the seismic-induced vibration of the wind turbine tower considering soil-structure interaction. e results showed that TMD could reduce resonant tower vibrations and improve the fatigue life of wind turbines effectively.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vibration Mitigation of Wind Turbine Tower Using Bi-Directional Tuned Mass Dampers

Zhang

Yang

et al. 2020

Mathematical Problems in Engineering

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Wind turbines have been increasingly erected in earthquake regions to harvest abundant wind energy. However, the wind turbine tower is slender and lightly damping, which exhibits high susceptibility to earthquake-induced vibration. It is challenging to mitigate the seismic vibration of the tower. In this study, a bi-directional tuned mass damper (BTMD) is proposed to mitigate the seismic vibration of the wind turbine tower. Meanwhile, a lumped-mass finite element model (LFEM) and a coupled blade tower finite element model (CBFEM) are used to investigate the vibration mitigation performance of the BTMD. First, the BTMD and corresponding dynamic equilibrium equations are systemically introduced. Accordingly, the optimum stiffness and damping of the BTMD at different mass ratios are investigated. Then, the dynamic prosperities of the LFEM and CBFEM are compared. Subsequently, the seismic responses of the wind turbine with the BTMD are conducted using the LFEM and CBFEM. Meanwhile, the mitigation performances of the BTMD under uni- and bi-directional earthquakes are investigated. The displacement, acceleration, and bending moment of the wind turbine tower are analyzed in time domain and frequency domain. Note that the influential factors, including mass ratio and structural frequency, on the vibration mitigation performance of the BTMD are investigated. Results show that the proposed BTMD can significantly mitigate the peak values of the top displacement and bottom bending moment. However, the blade tower coupling effect and frequency variation of the tower would have influences on the mitigation efficiency of the BTMD. The results enable a better understanding of the seismic vibration mitigation of the wind turbine tower using tuned mass dampers.

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Vibration Mitigation of Wind Turbine Towers with Tuned Mass Dampers

Cited by 16 publications

References 10 publications

Resonance of steel wind turbines: Problems and solutions

Resonance of steel wind turbines: Problems and solutions

Dämpfungsverhalten unterschiedlicher Fluide in einem Flüssigkeitstilgersystem

Seismic Vibration Mitigation of Wind Turbine Tower Using Bi-Directional Tuned Mass Dampers

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