Active tuned mass damper for damping of offshore wind turbine vibrations

Brodersen, Mark Laier; Bjørke, Ann-Sofie; Høgsberg, Jan Becker

doi:10.1002/we.2063

Cited by 81 publications

(31 citation statements)

References 23 publications

(43 reference statements)

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“…Up to now, numerous researches pertaining to structural control of wind turbines employing TMD have been conducted, among which four types of TMD are considered, namely passive TMD, active TMD, semi‐active TMD, and multiple tuned mass dampers (MTMDs) . Note that the damping performance of active TMD is superior over passive TMD at the expense of active power consumption .…”

Section: Introductionmentioning

confidence: 99%

Shaking table test on vibration control effects of a monopile offshore wind turbine with a tuned mass damper

et al. 2018

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To investigate vibration control effects of a tuned mass damper (TMD) on the monopile offshore wind turbine tower under wind‐wave excitations and seismic excitations, shaking table tests on a 1/13‐scaled test model equipped with or without TMD are implemented. The TMD device adopted in the test is a bidirectional TMD whose mass ratio and frequency ratio are properly designed. During the test, the model identification of wind turbine model is conducted via white noise sweep. Furthermore, the influence of aerodynamic damping generated by blade rotation on the dynamic responses of a monopile offshore wind turbine is analyzed. Additionally, the vibration control effects of TMD under different rotation speeds of the blades and various external excitations are intensively studied. Based on the test results, the seismic responses of a monopile offshore wind turbine attached with/without TMD are also analyzed by the finite element software ANSYS. It has been found that the results obtained by numerical simulation fit well to the results derived from the experimental tests, showing that the numerical simulation method proposed in this paper is feasible with satisfactory accuracy. Both experimental and numerical researches conducted in this work are conducive to the further application of TMD to offshore wind turbines that are situated in seismic active regions. It should be noted that the investigated time‐histories cannot give a generalized result regarding the real performance of the TMD under wind‐wave excitations. The documented results can only support an overview about the tendency of the TMD efficiency.

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Section: Introductionmentioning

confidence: 99%

Shaking table test on vibration control effects of a monopile offshore wind turbine with a tuned mass damper

et al. 2018

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“…A variety of control algorithms for S‐A control have been explored in the literature. The majority of research in this area has utilized reduced order‐state space models with limited DOFs, such as the translational shear mode, TMD motion, two lowest tower modes, and platform pitch mode (for OWT application) . Lin et al and Ji et al utilized S‐A TMDs using an optimal clipped control law based on the active control forces derived on the basis of optimal linear quadratic regulator (LQR) control algorithms.…”

Section: Structural Control Strategiesmentioning

confidence: 99%

An investigation on the impacts of passive and semiactive structural control on a fixed bottom and a floating offshore wind turbine

et al. 2019

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The application of structural control to offshore wind turbines (OWTs) using tuned mass dampers (TMDs) has shown to be effective in reducing the system loads. The parameters of a magnetorheological (MR) damper modeled by the Bouc‐Wen model are modified to utilize it as a damping device of the TMD. Rather than showcasing the intricate design policy, this research focuses on the availability of the MR damper model on TMDs and its significance on structural control. The impact of passive and semiactive (S‐A) TMDs applied to both fixed bottom and floating OWTs is evaluated under the fatigue limit state (FLS) and the ultimate limit state (ULS). Different S‐A control logics based on the ground hook (GH) control policy are implemented, and the frequency response of each algorithm is investigated. It is shown that the performance of each algorithm varies according to the load conditions such as a normal operation and an extreme case. Fully coupled time domain simulations are conducted through a newly developed simulation tool, integrated into FASTv8. Compared with the passive TMD, it is shown that the S‐A TMD results in higher load reductions with smaller strokes under both the FLS and the ULS conditions. The S‐A TMD using displacement‐based GH control is capable of reducing the fore‐aft and side‐to‐side damage equivalent loads for the monopile by approximately 12% and 64%, respectively. The ultimate loadings at the tower base for the floating substructure are reduced by 9% with the S‐A TMD followed by inverse velocity‐based GH control (IVB‐GH).

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“…An active mass damper/driver (AMD), [ 1–4 ] a passive tuned mass damper (TMD), [ 5–9 ] or an active TMD (ATMD) [ 10–13 ] are often used to suppress the dynamic responses of civil engineering structures under external loads such as strong winds or moderate earthquakes. Indeed, the performance of AMD systems is better than other forms theoretically.…”

Section: Introductionmentioning

confidence: 99%

A variable gain state‐feedback technique for an AMD control system with stroke limit and its application to a high‐rise building

Chen

Teng

et al. 2020

Structural Design Tall Build

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Summary As the auxiliary mass of an active mass damper/driver (AMD) control system in a high‐rise building has excessive strokes and its relative velocities are in the same direction with the strokes, the auxiliary mass probably collides with its anti‐collision device. As a result, the structural responses increase and even the structural safety is endangered. In this paper, a variable gain state‐feedback control system is proposed to limit the strokes and relative velocities of the auxiliary mass, so as to ensure the safety of the system. Firstly, the limited state of the auxiliary mass is defined, and a regional pole assignment algorithm that utilizes only a damping factor is realized as a control gain. Then the relationship between the control gain corresponding to the stroke and its threshold limit value is deduced. A suitable threshold limit value is chosen to reduce the strokes and the relative velocities. Finally, the performance characteristics of the control systems with or without stroke limit are analyzed. The results demonstrate that the controller limits the strokes effectively on the premise of guaranteeing the control effects and the AMD parameters. To verify its effectiveness, the proposed methodology is also applied to an experiment of a four‐storey frame.

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Active tuned mass damper for damping of offshore wind turbine vibrations

Cited by 81 publications

References 23 publications

Shaking table test on vibration control effects of a monopile offshore wind turbine with a tuned mass damper

Shaking table test on vibration control effects of a monopile offshore wind turbine with a tuned mass damper

An investigation on the impacts of passive and semiactive structural control on a fixed bottom and a floating offshore wind turbine

A variable gain state‐feedback technique for an AMD control system with stroke limit and its application to a high‐rise building

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