Stabilization of floating offshore wind turbines by artificial muscle based active mooring line force control

Li, Yaoyu; Wu, Zhongyou

doi:10.1109/acc.2016.7525257

Cited by 16 publications

(11 citation statements)

References 26 publications

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“…This novel extension of the TMD was found helpful in reducing tower loading. In a relatively similar approach, a STAM (sewing thread artificial muscle) based on thermal actuation attached to mooring lines of the TLP platform was proposed to minimize platform pitching and tower loading for regions 2 and 3 [79]. The active mooring method showed improved results regarding tower loading and pitching motions.…”

Section: Structural Controlmentioning

confidence: 99%

A synthesis of feasible control methods for floating offshore wind turbine system dynamics

Shah

Meng

et al. 2021

Renewable and Sustainable Energy Reviews

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Section: Structural Controlmentioning

confidence: 99%

A synthesis of feasible control methods for floating offshore wind turbine system dynamics

Shah

Meng

et al. 2021

Renewable and Sustainable Energy Reviews

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“…These modules produce maximum bending angle of 40 • in any direction, and reversible radius of curvature reaching 0.23 mm −1 [18]. Integrated systems have been proposed, including musculoskeletal system [19,20], robotic hand [21,22], power generation systems [23,24], and robotic skin, in which the TCP muscles are embedded within the soft silicone skin as linear actuators, allowing the skin to generate desired movements without noise [25].…”

Section: Introductionmentioning

confidence: 99%

A Modeling of Twisted and Coiled Polymer Artificial Muscles Based on Elastic Rod Theory

Zheng

2020

Actuators

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Twisted and coiled polymer (TCP) can generate large stroke and output high power density, making it a promising artificial muscle. Thermally induced muscles fabricated from nylon or other polymer fibers can be used in robotic, biomedical devices, and energy-harvesting equipment. While fibers with different shapes and materials have different optimal process parameters. Understanding mechanisms of TCP forming and the impact of process parameters is critical to explore stronger, more powerful artificial muscles. In this paper, an elastic-rod-theory-based model was established for capturing the quantitative relationship between tensile actuation and fabrication load. Further experimental results agree with model calculation and TCP muscles used in our research reaches maximum stroke of 52.6%, strain up to 9.8 MPa, and power density of 211.89 J/kg.

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“…As the TLP is mainly balanced by the tension forces of mooring lines and the buoyant force, active mooring line tension control is an effective way to control the platform motion. Li and Wu propose to use artificial muscle–based actuators realizing active mooring‐line control, in order to damp the platform roll and pitch motion, and simulation study shows significant reduction in the tower loads. A major issue lies in that the actuators must bear huge mooring line tension forces; thus, the capacity and power consumption of the actuators will be significantly demanding.…”

Section: Introductionmentioning

confidence: 99%

Platform stabilization and load reduction of floating offshore wind turbines with tension‐leg platform using dynamic vibration absorbers

2020

Wind Energy

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Floating offshore wind turbines (FOWT) are subject to significant increases in structural loads due to the platform motion under turbulent wind and wave. The underactuation challenge in FOWT control demands for development of extra actuators for platform stabilization. For FOWT with tension-leg platform (TLP), this paper presents a comprehensive study on design and control simulation for realizing active mooring line control via the deployment of vertically operated dynamic vibration absorbers (DVAs) at the spokes of TLP structure. The DVA is designed based on the suppression of the primary modes of platform pitch and roll motion. In addition to the enhancement of FAST-based simulation module, an 11 degrees-of-freedom (DOFs) control-oriented model is derived for the TLP-FOWT-DVA system. Based on the control-oriented model, a linear quadratic regulator (LQR) controller is designed. Simulations are performed for 9 m/s and 18 m/s turbulent winds with different wind and wave directions. The wind turbine performance, platform motions, and structural fatigue loads are evaluated. The results show that the platform motion and tower loads in the lateral direction are significantly reduced, while the tower load in the fore-aft direction can be moderately reduced. Also, significant reduction in the mooring line tension loads is observed. For achieving the performance in platform motion stabilization and load reduction, the average power consumption of the DVA actuators is less than 0.27% of the wind turbine power generated during the simulated periods. The figures of merits promise significant potential for the feasibility of DVA based control for TLP-FOWT. K E Y W O R D Sactive mooring line control, dynamic vibration absorber, floating offshore wind turbine, load reduction, platform stabilization, tension-leg platform, vibration control

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Stabilization of floating offshore wind turbines by artificial muscle based active mooring line force control

Cited by 16 publications

References 26 publications

A synthesis of feasible control methods for floating offshore wind turbine system dynamics

A synthesis of feasible control methods for floating offshore wind turbine system dynamics

A Modeling of Twisted and Coiled Polymer Artificial Muscles Based on Elastic Rod Theory

Platform stabilization and load reduction of floating offshore wind turbines with tension‐leg platform using dynamic vibration absorbers

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