Structural responses suppression for a barge‐type floating wind turbine with a platform‐based TMD

Xie, Shuangyi; Jin, Xin; He, Jie; Zhang, Chenglin

doi:10.1049/iet-rpg.2018.6054

Cited by 9 publications

(7 citation statements)

References 35 publications

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“…In [19], it is shown how the structural responses of the floating wind turbine are mitigated by using a single-degree of freedom tuned mass damper that was installed in the platform. Based on a new model that combines multi-body model and external control codes, the turbine model coupled with the TMD is simulated under wind and wave loads.…”

Section: Related Workmentioning

confidence: 99%

Analysis of the Effects of the Location of Passive Control Devices on the Platform of a Floating Wind Turbine

Galán-Lavado

Santos

2021

Energies

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Floating offshore wind turbines (FOWT) are subjected to strong loads, mainly due to wind and waves. These disturbances cause undesirable vibrations that affect the structure of these devices, increasing the fatigue and reducing its energy efficiency. Among others, a possible way to enhance the performance of these wind energy devices installed in deep waters is to combine them with other marine energy systems, which may, in addition, improve its stability. The purpose of this work is to analyze the effects that installing some devices on the platform of a barge-type wind turbine have on the vibrations of the structure. To do so, two passive control devices, TMD (Tuned Mass Damper), have been installed on the platform of the floating device, with different positions and orientations. TMDs are usually installed in the nacelle or in the tower, which imposes space, weight, and size hard constraints. An analysis has been carried out, using the FAST software model of the NREL-5MW FOWT. The results of the suppression rate of the tower top displacement and the platform pitch have been obtained for different locations of the structural control devices. They have been compared with the system without TMD. As a conclusion, it is possible to say that these passive devices can improve the stability of the FOWT and reduce the vibrations of the marine turbine. However, it is indispensable to carry out a previous analysis to find the optimal orientation and position of the TMDs on the platform.

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Section: Related Workmentioning

confidence: 99%

Analysis of the Effects of the Location of Passive Control Devices on the Platform of a Floating Wind Turbine

Galán-Lavado

Santos

2021

Energies

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“…According to this last consideration and taking the cue from the implications set by the Lyapunov direct method, it can be said that the controlled block dynamics are asymptotically stable with timedomain performances determined by the value of the control parameters (i.e., q 12 , q 22 ). [48][49][50][51] Although in Equation (13) three coefficients q 12 , q 22 , and r appear, the optimal control law depends only on the two independent coefficients that are the ratiosq 12 = q 12 =r andq 22 = q 22 =r . Several analyses are performed varying these two independent coefficients.…”

Section: Control Lawmentioning

confidence: 99%

Protection from overturning of rigid block‐like objects with linear quadratic regulator active control

Egidio

Contento

Olivieri

et al. 2020

Struct Control Health Monit

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Summary In recent years, several studies proposed new techniques aimed at improving the performances of rigid block‐like objects under base excitation. The majority of these studies considered passive control methods, such as base isolation or other techniques based on the tuned mass damper principle. Only few studies considered active and semi‐active control methods applied to the dynamics of rigid blocks. This paper proposes an active control method for symmetric rigid blocks that is based on the LQR approach. The optimal control law is obtained starting from the linearized equation of motion. The effectiveness of the proposed control method is investigated comparing the behaviour of rigid blocks with and without active control under harmonic and seismic excitation. The results are summarized in overturning spectra, in the case of harmonic excitation, and rocking maps, in the case of seismic excitation. Although the proposed active control method is expected to work well for slender blocks, specific analyses show that the method also improves the dynamics of no‐slender blocks and is effective for blocks with different geometrical characteristics. Moreover, the results show that the control law has a good robustness with respect to the sampling time and the time delay.

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“…One of the most representative of these is an active mass damper (AMD); the essence of passive dampers is mass-spring-damper systems, which can reduce vibration by changing the resonance characteristics of structures, among which a tuned mass damper (TMD) is the most widely used. Researchers have found that the reasonable configuration of an AMD [13][14][15] and a TMD [16][17][18] can reduce the vortex-induced response of the structure and reduce the occurrence of instability. However, the design of auxiliary dampers must match the mass and stiffness of structures themselves, otherwise it will aggravate the vibration of structures, the auxiliary dampers will not weaken the existing vortex-induced load, and the fatigue damage problem of structures will not be effectively solved.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Continuous Trapezoidal Straight Spoiler Plates on the Vortex-Induced Vibration of Wind Turbine Towers

Zhang

Chen³

et al. 2022

Atmosphere

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This paper proposes a method of controlling the vortex-induced vibration (VIV) of wind turbine towers by adding continuous trapezoidal straight spoiler plates (TS) onto their outer surface: a fluid–solid coupling model was constructed to simulate the processes of Karman vortex generation and shedding on the different surfaces of an original tower (O–tower) and a tower with TS (TS–tower) with assumed and actual Re, while the VIV frequencies were also calculated and compared; the effects of the TS geometry parameters on the VIV frequency of towers were studied to investigate the recommended size; a modal analysis was carried out to research the effects of TS on the vortex-induced resonance risk of towers; and the simulation results as well as relevant research conclusions were validated by an analogical wind tunnel test.

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Structural responses suppression for a barge‐type floating wind turbine with a platform‐based TMD

Cited by 9 publications

References 35 publications

Analysis of the Effects of the Location of Passive Control Devices on the Platform of a Floating Wind Turbine

Analysis of the Effects of the Location of Passive Control Devices on the Platform of a Floating Wind Turbine

Protection from overturning of rigid block‐like objects with linear quadratic regulator active control

The Effect of Continuous Trapezoidal Straight Spoiler Plates on the Vortex-Induced Vibration of Wind Turbine Towers

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