Improved reliability of wind turbine towers with active tuned mass dampers (ATMDs)

Fitzgerald, Breiffni; Sarkar, Saptarshi; Staino, Andrea

doi:10.1016/j.jsv.2017.12.026

Cited by 97 publications

(60 citation statements)

References 34 publications

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“…k T T is the elastic stiffness of the tower and k i BB = k e BB + k c BB + k g BB cos(ψ i ) is the summation of the elastic stiffness k e BB centrifugal stiffness k c BB and gravitational stiffening/softening of the i th blade. More details on these terms can be found in [34]- [36].…”

Section: Appendix B Equations Of Motion Of the Reduced Order Modelmentioning

confidence: 99%

Individual Blade Pitch Control of Floating Offshore Wind Turbines for Load Mitigation and Power Regulation

Sarkar

Fitzgerald

Basu

2021

IEEE Trans. Contr. Syst. Technol.

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This paper proposes a new strategy for individual blade pitch control to regulate power production while simultaneously alleviating structural loads on spar-type floating offshore wind turbines. Individual blade pitch control types of algorithms for offshore wind turbines are sparse in the literature though there are expected benefits from experience on such types of controllers for onshore wind turbines. Wind turbine blade pitch actuators are primarily used to maintain rated power production at above-rated wind speeds and therefore, control algorithms are usually developed only to regulate power production. The scope of reducing structural loads using individual pitch control has been proved to be very promising over the last decade and numerous individual pitch control algorithms have been proposed by researchers. However, reduction in structural loads often results in a degradation in power production and regulation. Furthermore, improving power regulation often has a detrimental effect on the floating platform motion. In this paper, a new control strategy is proposed to achieve the two competing objectives. The proposed controller combines a low authority Linear Quadratic (LQ) controller with an integral action to reduce the 1P (once per revolution) aerodynamic loads while regulating power production using the same pitch actuators that are traditionally used only to optimize power production. The proposed controller is compared against the baseline controller used by state-of-the-art wind turbine simulator FAST using a high fidelity aeroelastic offshore wind turbine model. Numerical results show that the proposed controller offers improved performance in optimizing power production and reducing wind turbine and platform loads compared to the baseline controller over an envelope of windwave loading environment.Index Terms-Floating offshore wind turbines, individual blade pitch control, regulate power production, alleviate aerodynamic loads.

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Section: Appendix B Equations Of Motion Of the Reduced Order Modelmentioning

confidence: 99%

Individual Blade Pitch Control of Floating Offshore Wind Turbines for Load Mitigation and Power Regulation

Sarkar

Fitzgerald

Basu

2021

IEEE Trans. Contr. Syst. Technol.

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“…Arrigan et al and Fitzgerald et al developed semi‐active TMDs to control the vibrations of wind turbine towers and blades. Active TMDs have also been investigated by Lackner and Rotea, Fitzgerald and Basu, and Fitzgerald et al Liquid dampers have also been used by researchers for vibration control of wind turbines. Tuned liquid column damper was used by Colwell and Basu, Zhang et al; tuned liquid damper was used by Zhang et al; circular liquid column damper was used by Basu et al; and magneto‐rheological tuned liquid column damper was used by Sarkar and Chakraborty .…”

Section: Introductionmentioning

confidence: 99%

Vibration control of spar‐type floating offshore wind turbine towers using a tuned mass‐damper‐inerter

Sarkar

Fitzgerald

2019

Struct Control Health Monit

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Summary This paper investigates the use of a passive tuned mass‐damper‐inerter (TMDI) for vibration control of spar‐type floating offshore wind turbine towers. The TMDI is a relatively new concept as a passive vibration control device. The configuration consists of an “inerter” attached to the tuned mass, parallel to the spring and damper of a classical tuned mass damper (TMD). The inerter provides a mass amplification effect on the classical TMD. The presence of the inerter virtually increases the mass of the damper leading to greater vibration control capabilities. This enables one to achieve improved vibration control using a lighter damper. Using a lightweight damper is particularly important for an offshore wind turbine because increasing mass on top of the tower can destabilize the overall system and increase tower vibrations, as demonstrated in this paper. The development of a passive TMDI for an offshore wind turbine tower has been proposed in detail in this work. Numerical simulations have been performed and results are presented demonstrating the impressive vibration control capabilities of this new device under various stochastic wind‐wave loads. It has been shown that the TMDI has considerable advantages over the classical TMD, achieving impressive response reductions with reductions in the stroke of the tuned mass. The TMDI has been shown to be a promising candidate for replacing the classical TMD for offshore wind applications.

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“…For efficient suppression of the vibration of the system, the frequency of the mass damper is usually tuned to the fundamental frequency of the primary system, and therefore, such a device is usually termed as the tuned mass damper (TMD) or dynamic vibration absorber (DVA). The TMD has been widely researched and used for vibration suppression applications in various areas © 2019 Computer-Aided Civil and Infrastructure Engineering (Elias & Matsagar, 2017;Fitzgerald, Sarkar, & Staino, 2018;Gutierrez Soto & Adeli, 2014;Lin, Chen, & Wang, 2010;Lu, Zhang, Zhao, & Li, 2018). For example, the TMD has been used for the vibration control of structures, such as high-rise buildings under wind loads (Cha & Agrawal, 2010;Gutierrez Soto & Adeli, 2013a;Lu, Zhang, Wu, & Shan, 2019).…”

Section: Introductionmentioning

confidence: 99%

Semi‐active algorithm for energy‐based predictive structural control using tuned mass dampers

Zelleke

Matsagar

2019

Computer aided Civil Eng

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A novel semi‐active control algorithm is developed and numerically evaluated for the suppression of undesirable structural vibrations. The mechanical energy of the vibrating structure is considered as the primary variable influencing the control action. This intuitive strategy is proposed to realize improved control of structural vibrations. The numerical study conducted reveals that the proposed energy‐based predictive (EBP) algorithm can be implemented on vibration control applications. The energy imparted to the structure is also reduced due to the proposed algorithm. The influence of the parameters of the proposed semi‐active tuned mass damper is studied. Further, the application of the proposed strategy on a realistic structure is numerically demonstrated by implementing the algorithm for the wind response control of a 76‐story benchmark building. The results show that the EBP algorithm is a competitive semi‐active strategy. The robustness of the strategy is also evaluated considering uncertainties in the properties of the benchmark building.

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Improved reliability of wind turbine towers with active tuned mass dampers (ATMDs)

Cited by 97 publications

References 34 publications

Individual Blade Pitch Control of Floating Offshore Wind Turbines for Load Mitigation and Power Regulation

Individual Blade Pitch Control of Floating Offshore Wind Turbines for Load Mitigation and Power Regulation

Vibration control of spar‐type floating offshore wind turbine towers using a tuned mass‐damper‐inerter

Semi‐active algorithm for energy‐based predictive structural control using tuned mass dampers

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