Wind turbine's tower-nacelle model with magnetorheological tuned vibration absorber

Martynowicz, Pawea; Szydao, Zbigniew

doi:10.1109/carpathiancc.2013.6560545

Cited by 17 publications

(37 citation statements)

References 6 publications

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“…Based on all the assumptions, constraints and thorough analyses results that are covered in [19][20][21], Ti Gr. 5 rod was selected to model wind turbine tower, while Lord Co. RD 1097-1 [17] was utilized as TVA MR damper.…”

Section: Wind Turbine Tower-nacelle Modelmentioning

confidence: 99%

“…Excitation signal is generated by LDS Dactron 7 and amplified by the Modal Shop 2100E21-400 unit 8. Such a laboratory test rig gives the possibility to model wind turbine tower vibration under several excitation sources [19][20][21]. (Fig.…”

Section: Laboratory Test Rigmentioning

confidence: 99%

“…FFTs exhibiting averaged 1 st (f 1 =3.45 Hz) and 2 nd (f 2 =30.52 Hz) bending frequencies of the laboratory and simulation models [23][24][25][26], obtained from the experimental |x 0 (f)| and simulation |x 0M (f)| rod midpoint horizontal displacement series, are presented in the Fig. 4.…”

Section: Laboratory Test Rigmentioning

confidence: 99%

“…Considering nonzero MR damper response time and value of the 2 nd bending mode frequency (separate publication on test rig identification), the main purpose of vibration reduction system and TVA implementation was to reduce amplitudes of x 0 (rod midpoint) and x 1 (rod tip or nacelle) horizontal displacements corresponding to 1 st tower-nacelle bending mode, thus TVA location was selected to be at the nacelle [19,21,24,26]. In this paper, selected approaches to the problem of wind turbine tower-nacelle system vibration control with MR TVA are presented using specially developed and built laboratory test rig, on the basis of previous thorough simulations and preliminary experiments including 1 st and 2 nd bending mode of vibration analyses that are presented in [24,26].…”

Section: Vibration Controlmentioning

confidence: 99%

“…In this paper, selected approaches to the problem of wind turbine tower-nacelle system vibration control with MR TVA are presented using specially developed and built laboratory test rig, on the basis of previous thorough simulations and preliminary experiments including 1 st and 2 nd bending mode of vibration analyses that are presented in [24,26]. Since it was observed that 2 nd bending mode of vibration reduction possibilities for the system with MR TVA are negligible, only the 1 st mode of vibration is analyzed here.…”

Section: Vibration Controlmentioning

confidence: 99%

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Study of vibration control using laboratory test rig of wind turbine tower-nacelle system with MR damper based tuned vibration absorber

Martynowicz¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Abstract. Wind turbine tower dynamic stress is related to the fatigue wear and reliability of the whole wind turbine structure. This paper deals with the problem of tower vibration control using a specially designed and built laboratory model. The considered wind turbine tower-nacelle model consists of a vertically arranged stiff rod (representing the tower), and a system of steel plates (representing nacelle and turbine assemblies) fixed at its top. The horizontally aligned tuned vibration absorber (TVA) with magnetorheological (MR) damper is located also at the top of the rod (in nacelle system). Force excitation sources applied horizontally to the tower itself and to the nacelle were both considered. The MR damper real-time control algorithms, including ground hook control and its modification, sliding mode control, linear and nonlinear (cubic and square root) damping, and adaptive solutions are compared to the open-loop case with various constant MR damper input current values and system without MR TVA (i.e., MR TVA in "locked" state). Comprehensive experimental analyses and their results are presented.Key words: wind turbine vibration, tower-nacelle laboratory model, tuned vibration absorber, MR damper, tower vibration control.Study of vibration control using laboratory test rig of wind turbine tower-nacelle system with MR damper based tuned vibration absorber P. MARTYNOWICZ* AGH University of Science and Technology, Department of Process Control, 30 Mickiewicza Ave., 30-059 Krakow, Poland additional moving mass, spring and viscous damper, which parameters are tuned to the selected (most often first) mode of vibration [10,14]. Passive TVAs work well at the load conditions characterized with a single frequency to which they are tuned, but cannot adapt to wide excitation spectrum [15], thus more advanced TVAs are considered to change or tune TVA operating frequency. Among them, magnetorheological (MR) TVAs are placed [15], as using MR damper (instead of viscous damper) guarantees a wide range of resistance force, fast response times, low sensitivity to temperature change and fluid contamination, high operational robustness, and minor energy requirements as compared with active systems [16][17][18]. As simulations and experiments show, implementation of MR damper in TVA system may lead to further vibration reduction in relation with passive TVA (subject of author's separate publications).Within the scope of current project, tower-nacelle simulation and laboratory models (Figs. 1 and 2) were specially developed and built, in which all turbine components (nacelle, blades, hub, shaft, generator and possibly gearbox) are represented by nacelle concentrated mass and mass moments of inertia. The laboratory test rig of wind turbine tower-nacelle system offers the possibility of modeling tower vibration under various aerodynamic, hydrodynamic, mechanical unbalance, changeable electromagnetic load, and other excitation sources (listed above), since horizontal concentrated force (designated by F s (t)) generated by dedi...

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Section: Wind Turbine Tower-nacelle Modelmentioning

confidence: 99%

Section: Laboratory Test Rigmentioning

confidence: 99%

Section: Laboratory Test Rigmentioning

confidence: 99%

Section: Vibration Controlmentioning

confidence: 99%

Section: Vibration Controlmentioning

confidence: 99%

See 3 more Smart Citations

Study of vibration control using laboratory test rig of wind turbine tower-nacelle system with MR damper based tuned vibration absorber

Martynowicz¹

2016

Bulletin of the Polish Academy of Sciences Technical Sciences

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Small-scale MR damper: design, fabrication and evaluation

Sharma

Hemalatha

2023

Asian J Civ Eng

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This article presents the results of an experimental investigation on a developed small scale MR damper for seismic response reduction in buildings. The damper is designed for a target capacity of 2kN.The damper was design and fabricated based on the principle of shear mode. Testing was done using MTS servo hydraulic UTM and the results were obtained as Force-velocity and Force displacement plot based on the real time data collected through MTS suite. The force corresponding to all the excitation frequency is obtained and has been plotted as force-velocity so as to compare the percentage increase in damping force. Maximum force was obtained as 252.4N at 1hz and minimum force as 175.9N at 0.1hz with corresponding velocity of 31.2mm/s for 1hz and 3.5mm/s for 0.2hz respectively. The experiment proves that with displacement control and variable excitation frequency, the velocity of the MR damper varies, and as a result, the damping force increases as frequency increases which is the main finding of this paper.

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Vibration control of offshore wind turbine under multiple hazards using single variable-stiffness tuned mass damper

Leng

Yang

et al. 2021

Ocean Engineering

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Wind turbine's tower-nacelle model with magnetorheological tuned vibration absorber

Cited by 17 publications

References 6 publications

Study of vibration control using laboratory test rig of wind turbine tower-nacelle system with MR damper based tuned vibration absorber

Study of vibration control using laboratory test rig of wind turbine tower-nacelle system with MR damper based tuned vibration absorber

Small-scale MR damper: design, fabrication and evaluation

Vibration control of offshore wind turbine under multiple hazards using single variable-stiffness tuned mass damper

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