Design and Performance Assessment of Multi-Use Offshore Tension Leg Platform Equipped with an Embedded Wave Energy Converter System

Yu, Jianxing; Li, Zhenmian; Yu, Yang; Hao, Shuai; Fu, Yiqin; Cui, Yonghao; Wu, Han

doi:10.3390/en13153991

Cited by 11 publications

(7 citation statements)

References 46 publications

(55 reference statements)

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“…Installation space still remains an issue for TLCDs; however, novel contributions such as using an S-shape damper in tension-leg platforms (Figure 29) rather than the conventional U-shape has shown improved performance with less occupied space [144]. Interestingly, a recent study has introduced multi-purpose TLCDs, which combine strong incentives to mitigate vibrations of offshore floating platforms by recycling the kinetic energy of incident waves [145].…”

Section: Tuned Liquid Column Dampermentioning

confidence: 99%

Recent Advances in Vibration Control Methods for Wind Turbine Towers

2021

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Wind power is a substantial resource to assist global efforts on the decarbonization of energy. The drive to increase capacity has led to ever-increasing blade tip heights and lightweight, slender towers. These structures are subject to a variety of environmental loads that give rise to vibrations with potentially catastrophic consequences, making the mitigation of the tower’s structural vibrations an important factor for low maintenance requirements and reduced damage risk. Recent advances in the most important vibration control methods for wind turbine towers are presented in this paper, exploring the impact of the installation environment harshness on the performance of state-of-the-art devices. An overview of the typical structural characteristics of a modern wind turbine tower is followed by a discussion of typical damages and their link to known collapse cases. Furthermore, the vibration properties of towers in harsh multi-hazard environments are presented and the typical design options are discussed. A comprehensive review of the most promising passive, active, and semi-active vibration control methods is conducted, focusing on recent advances around novel concepts and analyses of their performance under multiple environmental loads, including wind, waves, currents, and seismic excitations. The review highlights the benefits of installing structural systems in reducing the vibrational load of towers and therefore increasing their structural reliability and resilience to extreme events. It is also found that the stochastic nature of the typical tower loads remains a key issue for the design and the performance of the state-of-the-art vibration control methods.

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Section: Tuned Liquid Column Dampermentioning

confidence: 99%

Recent Advances in Vibration Control Methods for Wind Turbine Towers

2021

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“…This way companies make better use of the expensive platform by extracting more energy from multiple sources at once, efficiency, and cost reduction. Wind-wave energy platforms are the most reputed combination and most suitable ones for deep offshore waters [32][33][34][35]. The use of the WEC with a FOWT has been suggested and showed encouraging outcomes.…”

Section: Introductionmentioning

confidence: 99%

Fuzzy Airflow-Based Active Structural Control of Integrated Oscillating Water Columns for the Enhancement of Floating Offshore Wind Turbine Stabilization

M’zoughi

Garrido

et al. 2023

International Journal of Energy Research

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This paper presents the modeling and stabilization of a floating offshore wind turbine (FOWT) using oscillating water columns (OWCs) as active structural control. The novel concept of this work is to design a new FOWT platform using the ITI Energy barge with incorporated OWCs at opposite sides of the tower, in order to alleviate the unwanted system oscillations. The OWCs provide the necessary opposing forces to the bending moment of the wind upon the tower and the waves upon the floating barge platform. However, the forces have to be synchronized with the tilting of the system which will be ensured by the proposed fuzzy airflow control strategy. Using the platform pitch angle, the fuzzy airflow control opens the valve of one side and closes the valve of the other side accordingly. Results of simulation in comparison with the standard FOWT and a PID-based airflow control show the efficiency of the fuzzy airflow control and its superiority to decrease the platform pitching and the top tower fore-aft displacement.

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“…There are many articles using combined FOWT and Wave Energy Converters (WEC) to create a multi-purpose platform that absorbs both wind and wave energies [27][28][29][30][31]. However, there are a few articles proposing OWCs included in FOWTs with stabilization as the main objective.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis on the Use of Oscillating Water Column in Barge-Based Floating Offshore Wind Turbines

et al. 2021

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Undesired motions in Floating Offshore Wind Turbines (FOWT) lead to reduction of system efficiency, the system’s lifespan, wind and wave energy mitigation and increment of stress on the system and maintenance costs. In this article, a new barge platform structure for a FOWT has been proposed with the objective of reducing these undesired platform motions. The newly proposed barge structure aims to reduce the tower displacements and platform’s oscillations, particularly in rotational movements. This is achieved by installing Oscillating Water Columns (OWC) within the barge to oppose the oscillatory motion of the waves. Response Amplitude Operator (RAO) is used to predict the motions of the system exposed to different wave frequencies. From the RAOs analysis, the system’s performance has been evaluated for representative regular wave periods. Simulations using numerical tools show the positive impact of the added OWCs on the system’s stability. The results prove that the proposed platform presents better performance by decreasing the oscillations for the given range of wave frequencies, compared to the traditional barge platform.

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Design and Performance Assessment of Multi-Use Offshore Tension Leg Platform Equipped with an Embedded Wave Energy Converter System

Cited by 11 publications

References 46 publications

Recent Advances in Vibration Control Methods for Wind Turbine Towers

Recent Advances in Vibration Control Methods for Wind Turbine Towers

Fuzzy Airflow-Based Active Structural Control of Integrated Oscillating Water Columns for the Enhancement of Floating Offshore Wind Turbine Stabilization

Performance Analysis on the Use of Oscillating Water Column in Barge-Based Floating Offshore Wind Turbines

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