Vibration control device for steel tubular towers of Horizontal Axis Wind Turbines

Lima, Douglas Mateus de; López-Yánez, Pablo Aníbal; Pereira, Matheus Alves

doi:10.1590/1679-78255436

Cited by 9 publications

(8 citation statements)

References 17 publications

(17 reference statements)

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“…It is still clear that the DVA is not as effective in one direction, this is due to the random nature of the wind excitation. The DVA is designed to match the first two natural frequencies (bending modes) of the structure, in which case it would achieve attenuations of 90% [10] in case of external excitations coupled with these natural frequencies. Analyzing Table 2, in the case of wind action, comparing the RMS values, the hybrid control has a significant role in reducing acceleration.…”

Section: Resultsmentioning

confidence: 99%

“…For such cases there active ad hybrid dampers, where increase a hydraulic actuator in parallel with DVA stiffness and damping. Lima et al [10] perform a study that compares these three types of dampers under harmonic excitations and observed that the hybrid DVA is the one that presents the faster answer and biggest decrease in tower oscillations.…”

Section: Literature Reviewmentioning

confidence: 99%

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Hybrid Active Vibration Control in Wind Turbine Towers

Karnopp¹,

Gomes²

2021

14th WCCM-ECCOMAS Congress

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Due to the demand for renewable and clean energy sources, the generation of electricity from wind farms has become a reality in Brazil. The central unit of energy generation in these farms are the wind turbines composed of tower, nacelle, and blades. Reduction in mass and material is always desirable in these units due to the final cost impact on a wind farm consisting of several units. The main external excitation source in these systems is the wind, or the system itself, as in the case of possible imbalance. The design of the support tower and foundations must take into account quasi-static stresses as well as the varying and transient stresses the system may be exposed in the service life, which could lead to fracture or fatigue problems. Minimizing the mass of these structures and keeping their vibration levels at acceptable values is a difficult task that can be achieved by controlling vibration either passively (with Dynamic Vibration Absorbers, DVA) or actively with actuators. This paper proposes to investigate the active vibration control for wind turbine systems with hybrid active vibration control.

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Section: Resultsmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Hybrid Active Vibration Control in Wind Turbine Towers

Karnopp¹,

Gomes²

2021

14th WCCM-ECCOMAS Congress

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“…Due to those loads which create vibrations, structural fatigue can occur, leading sometimes to damage and/or to a reduction in the power productivity (Zhang et al, 2014). It becomes therefore urgent to think about a relevant technique which can reduce the vibrations and increase its longevity (De Lima et al, 2019; Fitzgerald and Basu 2020). Among those techniques, we name passive, active semi-active, and hybrid controls (Fitzgerald et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

The effect of the TMD on the vibration of an offshore wind turbine considering three soil-pile-interaction models

Robinson

Wang

2021

Advances in Structural Engineering

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In this paper we propose the use of the power series method and the Newmark-Beta algorithm to study the mitigation by the tuned mass damper (TMD) of an offshore wind turbine(OWT). The monopile of the OWT is taken as slender beam buried in a homogeneous soil while the tower is considered as tapered slender beam. Mathematically, both monopile and tower are modeled as elastic Euler-Bernoulli beams, with a point mass at the tower top representing the rotor nacelle assembly (RNA). First of all, the power series method is utilized to calculate the first natural frequencies of AF and CS models. The obtained results are compared with the first natural frequency of DS model obtained from FEM-Abaqus with good satisfaction. Next, the obtained mode shapes are used to establish the system of ordinary differential equations (ODE) governing the dynamic of OWT subjected to a TMD. Afterwards, the Newmark-Beta algorithm is employed to solve the ODE. Accuracy of the introduced approach is verified by setting a comparison between our results with those obtained using FEM-Abaqus. Finally, the influence of several parameters on the performance of TMD is shown in some plots.

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“…The authors found that the HMD system can better reduce the displacement from the top of the tower compared to the passive TMD system before and during earthquakes, although the need of high input control power and large displacements of the TMD. D. Lima, P. López-Yánez and M. Pereira [11] presented a a vibration control device design for a 120-meter-high steel tubular tower for a wind turbine. Three types of absorbers were then studied comparatively: tuned mass damper (TMD), active mass damper (AMD) and hybrid mass damper (HMD).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Control Algorithms Applied to an Hybrid Mass Damper Attached to an Wind Turbine Tower

Rocha¹,

Ávila²

2021

Proceedings of the 8th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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The structural control, basically, promotes a change in the damping and stiffness properties of the structure, either by the addition of external devices or by the action of external forces. It can be classified as: passive control, active control, hybrid control or semi-active control (Soong & Dargush, 1997). The hybrid mass damper (HMD) is a system that deals with the combination of a tuned mass damper (TMD) with an active control actuator. In addition to requiring lower control forces and maintaining its efficiency over a long range of frequencies, this system has a more robust and reliable control, when compared to active and passive alone (Collette & Chesné, 2016). Among the structures, the wind turbine stands out, which is supported by towers, which due to its geometry and height, are slender, flexible and can suffer excessive levels of vibration caused by the operation of the turbine, as well as by external forces (Woude & Narasimhan, 2014). In this work it is proposed the application of a structural control system, in the way of HMD, to protect a wind tower with theoretical dimensions and with a simplified as single degree of freedom model, submitted to wind and seismic loads that leads to levels of undesirable vibrations that may compromise the safety and integrity of the structure. In addition, it is proposed to compare the performances obtained from the system without control and by the Instantaneous Optimal Control (IOC), Proportional Integral Derivative (PID) and Linear Quadratic Regulator (LQR) controllers with numerical simulations performed using the MAPLESOFT, MATLAB and its Simulink control toolbox. The results obtained numerically were analyzed and compared with each other, and it was observed that HMD was efficient in reducing the dynamic response of the tower. Although it is a preliminary model, it is a basis for studies in this area to evolve into a more sophisticated model and fullscale applications.

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Vibration control device for steel tubular towers of Horizontal Axis Wind Turbines

Cited by 9 publications

References 17 publications

Hybrid Active Vibration Control in Wind Turbine Towers

Hybrid Active Vibration Control in Wind Turbine Towers

The effect of the TMD on the vibration of an offshore wind turbine considering three soil-pile-interaction models

Comparison of Control Algorithms Applied to an Hybrid Mass Damper Attached to an Wind Turbine Tower

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