A coupled numerical framework for hybrid floating offshore wind turbine and oscillating water column wave energy converters

Zhang, Dahai; Chen, Zheng; Liu, Xiaodong; Sun, Jili; Yu, Hao; Zeng, Weijian; You, Yong Sung; Sun, Yong; Cui, Limei; Yang, Shujie; Qian, Peng; Si, Yulin

doi:10.1016/j.enconman.2022.115933

Cited by 60 publications

(10 citation statements)

References 45 publications

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“…Mechanical-electrical wind energy conversion system. Reproduced with permission fro [78], Elsevier (Amsterdam, The Netherlands), 2022.…”

Section: Wind Energy Conversion Technologiesmentioning

confidence: 99%

The Energy Conversion and Coupling Technologies of Hybrid Wind–Wave Power Generation Systems: A Technological Review

Wang,

Sun,

Zhao

et al. 2024

Energies

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Based on the mutual compensation of offshore wind energy and wave energy, a hybrid wind–wave power generation system can provide a highly cost-effective solution to the increasing demands for offshore power. To provide comprehensive guidance for future research, this study reviews the energy conversion and coupling technologies of existing hybrid Wind–wave power generation systems which have not been reported in previous publications. The working principles of various wind and wave energy conversion technologies are summarised in detail. In addition, existing energy coupling technologies are specifically classified and described. All aforementioned technologies are comprehensively compared and discussed. Technological gaps are highlighted, and future development forecasts are proposed. It is found that the integration of hydraulic wind turbines and oscillating wave energy converters is the most promising choice for hybrid wind–wave power extraction. DC and hydraulic coupling are expected to become mainstream energy coupling schemes in the future. Currently, the main technological gaps include short their operating life, low energy production, limited economic viability, and the scarcity of theoretical research and experimental tests. The field offers significant opportunities for expansion and innovation.

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“…Mechanical-electrical wind energy conversion system. Reproduced with permission fro [78], Elsevier (Amsterdam, The Netherlands), 2022.…”

Section: Wind Energy Conversion Technologiesmentioning

confidence: 99%

The Energy Conversion and Coupling Technologies of Hybrid Wind–Wave Power Generation Systems: A Technological Review

Wang,

Sun,

Zhao

et al. 2024

Energies

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“…It was shown that although the platform's pitching motions affected the absorbed wave power by the OWCs, a large pitching angle led to increased accelerations at the hub of a WT. To ensure stability, the pitch resonance period needed to be increased above 1.56 s, as measured during scaled-down tests, corresponding to an equivalent full-scale period of 11 s. In [173], researchers established an aero-hydro-elastic-servo-mooring coupled numerical framework for integrated time-domain dynamic analysis of a hybrid wind-wave floating structure. The results were then compared against data from a 1:50 scale model wave basin test.…”

Section: Hybrid Owc Systemsmentioning

confidence: 99%

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments

Konispoliatis

2024

J Energ Power Technol

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The main challenge in designing offshore renewable energy structures is to ensure their structural integrity on a life cycle basis while operating in harsh environments and, in parallel, being financially competitive and environmentally friendly concerning other types of energy systems. The Oscillating Water Column (OWC) converters are among the first energy converters to be developed and deployed into the sea due to their relative simplicity of operation and relatively small number of moving parts. This review provides an overview of the recent floating OWC prototypes and projects and the latest research developments in wave energy conversion using the oscillating water column principle. Furthermore, critical structural advances are discussed, mainly focusing on the converter’s geometry and type and its mooring system design towards amplifying the absorbed wave power.

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“…Besides these indirect load mitigation control designs, more straightforward motion reduction control mechanisms by introducing additional actuations have been proposed, such as a structural control [22][23][24], ballast redistribution control [25], mooring control [26,27], or integration with wave energy converters [28,29]. These methods will allow for control operations even when the turbine is parked, e.g., the extreme wind condition, at the expense of extra equipment cost and energy utilisation if necessary.…”

Section: Of 24mentioning

confidence: 99%

Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines

Zhou,

Zhang,

Chen

et al. 2024

JMSE

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Besides improving the generator torque and blade pitch controller, incorporating additional control actuations, such as a vibration absorber and active ballast, into the floating offshore wind turbine (FOWT) system is also promising for the motion mitigation of FOWTs. This work aims to study the catenary mooring length re-configuration effect on the dynamic behaviours of semi-submersible FOWTs. The mooring length re-configuration mentioned here is achieved by altering the mooring length with winches mounted on the floating platform, which is in a period of minutes to hours, so that the mooring tensions could be adjusted to reduce the aerodynamic load induced platform mean pitch. Control designs for both single mooring line and multiple mooring lines have been described and studied comparatively. In order to assess the motion mitigation performance of the proposed mooring line length re-configuration methods, fully coupled numerical simulations under different environmental cases have been conducted. Results indicate that the catenary mooring length re-configuration is able to reduce the platform pitch motion by up to 15.8% under rated condition, while careful attention must be paid to the scenarios where the catenary moorings become taut, which may lead to large load variations.

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A coupled numerical framework for hybrid floating offshore wind turbine and oscillating water column wave energy converters

Cited by 60 publications

References 45 publications

The Energy Conversion and Coupling Technologies of Hybrid Wind–Wave Power Generation Systems: A Technological Review

The Energy Conversion and Coupling Technologies of Hybrid Wind–Wave Power Generation Systems: A Technological Review

Floating Oscillating Water Column Wave Energy Converters: A Review of Developments

Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines

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