Research on the Dynamic Performance of a Novel Floating Offshore Wind Turbine Considering the Fully-Coupled-Effect of the System

Zhang, Hongjian; Wang, Hao; Cai, Xin; Xie, Jiaojie; Wang, Shaobin; Zhang, Ningchuan

doi:10.3390/jmse10030341

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…The structural parameters of the OC3-Hywind spar floating platform are presented in Table 1 and the mooring system specifications are given in Table 2 [20]. Both floating platforms are equipped with the NREL 5MW model wind turbines [21]. Table 3 presents the porous shell specifications.…”

Section: Model Setupmentioning

confidence: 99%

Hydrodynamic Investigation on Floating Offshore Wind Turbine Platform Integrated with Porous Shell

et al. 2023

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As the siting of wind turbines increasingly transitions from shallow water to offshore deep-water locations, improving the platform stability of floating offshore wind turbines is becoming a growing concern. By coupling a porous shell commonly used in traditional marine structures, with a FOWT (floating wind turbine platform), a new spar-buoy with a porous shell was designed. A numerical model investigating the coupling effect of the aero-hydro-mooring system is developed, and the results of the motion response are compared with the OC3-Hywind spar. The motion response of the two platforms was simulated in the time-domain with the incident wave period varied in the range of 5~22 s. The exciting wave force with added mass and radiation damping of the spar with the porous shell is compared with the OC3-Hywind spar. The results demonstrate that the motion response amplitude of the spar with the porous shell decreases in all three main motion freedoms (i.e., surge, heave and pitch, etc.), among which the heave motions are most significantly attenuated. The study shows that the coupling of porous shells with a floating platform to achieve the reduced motion responses is feasible and can be an innovative structure for the development of deep-sea offshore floating wind turbines.

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Section: Model Setupmentioning

confidence: 99%

Hydrodynamic Investigation on Floating Offshore Wind Turbine Platform Integrated with Porous Shell

et al. 2023

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“…A fully submersible floating platform is similar to a semi-submersible one, but the middle parts of the columns are inclined outwards, while the upper and lower parts remain upright to connect to the center column via a set of cross braces and pontoons. This alteration lowers the platform's center of gravity, which is the primary source of stability in spar platforms, while simultaneously increasing the moment of inertia from which semi-submersible platforms achieve stability [66]. The dynamic response analysis of fully submersible platforms indicates that this type of floating platform has a relatively better overall dynamic performance, and the cost is 12.8% lower than that of a semi-submersible platform [65].…”

Section: Novel Platform Designsmentioning

confidence: 99%

Floating Offshore Wind Turbines: Current Status and Future Prospects

et al. 2022

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Offshore wind energy is a sustainable renewable energy source that is acquired by harnessing the force of the wind offshore, where the absence of obstructions allows the wind to travel at higher and more steady speeds. Offshore wind has recently grown in popularity because wind energy is more powerful offshore than on land. Prior to the development of floating structures, wind turbines could not be deployed in particularly deep or complicated seabed locations since they were dependent on fixed structures. With the advent of floating structures, which are moored to the seabed using flexible anchors, chains, or steel cables, wind turbines can now be placed far offshore. The deployment of floating wind turbines in deep waters is encouraged by several benefits, including steadier winds, less visual impact, and flexible acoustic noise requirements. A thorough understanding of the physics underlying the dynamic response of the floating offshore wind turbines, as well as various design principles and analysis methods, is necessary to fully compete with traditional energy sources such as fossil fuels. The present work offers a comprehensive review of the most recent state-of-the-art developments in the offshore wind turbine technology, including aerodynamics, hydromechanics, mooring, ice, and inertial loads. The existing design concepts and numerical models used to simulate the complex wind turbine dynamics are also presented, and their capabilities and limitations are discussed in detail.

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“…The platform's dynamic behavior under extreme sea conditions with a return period of 50 years was thoroughly investigated, which satisfies the requisite criteria and performance standards. Zhang et al [7] developed a fully submersible FOWP with inclined side columns (Figure 1b), which combines the structural characteristics of semi-submersible and Spar platforms. A comprehensive numerical model, considering the fully coupled aerodynamic-hydrodynamic-mooring effects, was established using OpenFAST and AQWA.…”

Section: Introductionmentioning

confidence: 99%

Design and Fully Coupled Dynamic Response Analysis of a New Floating Offshore Wind Platform

Shen¹,

Liu²,

Pan³

et al. 2023

JMSE

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Floating offshore wind platform (FOWP) has become the economically favored option for supporting wind turbines in deep waters. It is urgent to propose new concept designs for FOWPs that can be effectively deployed. Additionally, the extensive use of steel in such platforms significantly escalates costs, necessitating the optimization of steel utilization. Motivated by these challenges, a V-shaped floating semi-submersible platform equipped with NREL 5 MW wind turbine is designed and analyzed based on the potential flow theory and the blade element momentum theory. Fully coupled time-domain simulations are conducted using the F2A program, which couples NREL FAST and ANSYS AQWA via a Dynamic Link Library (DLL), to compare the hydrodynamic performance and stability of the V-shaped floating platform with the original triangle-shaped model of “Fuyao”. Various sea conditions have been considered, including combined wind-wave action and wind-wave-current action at different incidence angles. The results show that the V-shaped floating platform has better economic and hydrodynamic performance (e.g., a reduction of 40.4% and 12.9%, respectively, in pitch and yaw motions, and a 17.4% reduction in maximum mooring tension), but lower stability than its triangle-shaped counterpart.

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Research on the Dynamic Performance of a Novel Floating Offshore Wind Turbine Considering the Fully-Coupled-Effect of the System

Cited by 10 publications

References 27 publications

Hydrodynamic Investigation on Floating Offshore Wind Turbine Platform Integrated with Porous Shell

Hydrodynamic Investigation on Floating Offshore Wind Turbine Platform Integrated with Porous Shell

Floating Offshore Wind Turbines: Current Status and Future Prospects

Design and Fully Coupled Dynamic Response Analysis of a New Floating Offshore Wind Platform

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