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Offshore Renewable Energy, Second Edition
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Offshore Renewable Energy, Second Edition

A special issue of Journal of Marine Science and Engineering (ISSN 2077-1312). This special issue belongs to the section "Ocean Engineering".

Deadline for manuscript submissions: 1 June 2025 | Viewed by 3866

Special Issue Editors

Prof. Dr. Jijian Lian

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Guest Editor
Institute of Ocean Energy and Intelligent Construction, Tianjin University of Technology, Tianjin 300384, China
Interests: water conservancy and hydropower engineering; new energy engineering
Special Issues, Collections and Topics in MDPI journals
Dr. Qiang Fu

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Guest Editor
School of Electrical Engineering and Automation, Tianjin University of Technology, Tianjin 300384, China
Interests: offshore new energy; underwater robot
Special Issues, Collections and Topics in MDPI journals
Dr. Lin Cui

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Guest Editor
National Ocean Technology Centre, Ministry of Natural Resources, Tianjin, China
Interests: wave energy conversion; offshore wind; offshore solar; offshore hybrid power system; autonomous subsea vehicle
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Run Liu

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Guest Editor
School of Civil Engineering, Tianjin University, Tianjin 300072, China
Interests: offshore geotechnical engineering
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Bingyong Guo

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Guest Editor
Ocean Institute, Northwestern Polytechnical University, Taicang 215400, China
Interests: wave energy technology; hydrodynamic modelling and control
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

Offshore renewable energy is an abundant clean energy source. Its development and utilization will be beneficial for the development of a low-carbon economy and the achievement of energy-saving and emission reduction goals. It can achieve a complementary energy supply between land and sea, easing the pressure on conventional fossil energy resources in economically developed and energy-intensive coastal areas. The development of offshore renewable energy is a long-term process, but it is worth noting that, with the development and gradual maturity of various technologies, offshore renewable energy will be a mainstream new energy resource in the future. This Special Issue will provide updates regarding the development and utilization of offshore renewable energy. Potential topics include, but are not limited to, novel concepts, control strategies, modelling methods, intelligent equipment and monitoring technology applications.

Prof. Dr. Jijian Lian
Dr. Qiang Fu
Dr. Lin Cui
Prof. Dr. Run Liu
Prof. Dr. Bingyong Guo
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Marine Science and Engineering is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • development and utilization of offshore renewable energy
  • control strategies for multi-energy complementary offshore renewable energy systems
  • modelling methods in hydrodynamic and mechanic systems
  • simulation in multiple physics system or environments
  • physical experiments and testing
  • grid integration and energy storage
  • intelligent equipment, control and applications
  • marine technology for operation and maintenance
  • risk management and reliability assessment

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Related Special Issue

Published Papers (4 papers)

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Research

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19 pages, 23862 KiB  
Article
Hydrodynamic Performance of an Oscillating Water Column Device Installed in an Offshore Wind Turbine
by Chuanli Xu, Lei Ding, Yuting Sun and Zhen Liu
J. Mar. Sci. Eng. 2025, 13(1), 169; https://doi.org/10.3390/jmse13010169 - 18 Jan 2025
Viewed by 681
Abstract
Hybrid wind–wave energy devices have attracted significant attention for their potential to efficiently harness marine energy while reducing construction costs. In this work, the hydrodynamic performance of an oscillating water column (OWC) device installed in an offshore wind turbine was investigated. A three-dimensional [...] Read more.
Hybrid wind–wave energy devices have attracted significant attention for their potential to efficiently harness marine energy while reducing construction costs. In this work, the hydrodynamic performance of an oscillating water column (OWC) device installed in an offshore wind turbine was investigated. A three-dimensional numerical model was developed based on computational fluid dynamics. The numerical predictions demonstrate good agreement with the corresponding experimental results. The effects of key factors, such as chamber diameter, chamber draft, and pneumatic damping, on the energy capture performance were analyzed. The variation patterns of the free surface elevation, the air pressure, and the capture width ratio were analyzed. Additionally, flow characteristics and vortex dynamics around the device were presented for better understanding the energy capture process of the hybrid device. The results reveal that a larger chamber diameter is beneficial for energy conversion, and the optimal chamber draft and pneumatic damping were identified. Furthermore, the operating performance of the optimized device under irregular wave conditions was predicted. Full article
(This article belongs to the Special Issue Offshore Renewable Energy, Second Edition)
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21 pages, 23191 KiB  
Article
Energy Maximisation and Power Management for a Wave-to-Wire Model of a Vibro-Impact Wave Energy Converter Array
by Shuai Chen, Siya Jin, Bingyong Guo and Kunde Yang
J. Mar. Sci. Eng. 2024, 12(10), 1814; https://doi.org/10.3390/jmse12101814 - 11 Oct 2024
Viewed by 1059
Abstract
This paper develops a wave-to-wire model of a vibro-impact wave energy converter array for stand-alone offshore applications. Nonlinear model predictive control is proposed for maximising the wave power capture of the array, and implemented by AC/DC converters and the space vector pulse width [...] Read more.
This paper develops a wave-to-wire model of a vibro-impact wave energy converter array for stand-alone offshore applications. Nonlinear model predictive control is proposed for maximising the wave power capture of the array, and implemented by AC/DC converters and the space vector pulse width modulation technique. A hybrid energy storage system, consisting of batteries and supercapacitors, is placed parallel to the DC bus via buck-boost DC/DC converters to smooth the array power output, and a Lyapunov-based power management strategy is utilised to control the DC/DC converters for stabilising the DC bus voltage. Intensive numerical simulations are conducted; the results show that the proposed wave-to-wire model is capable to evaluate the performance of the vibro-impact wave energy converter array in various scenarios, and the proposed energy maximisation control and power management strategy can enhance wave power capture and stabilise the power output simultaneously. Full article
(This article belongs to the Special Issue Offshore Renewable Energy, Second Edition)
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20 pages, 7040 KiB  
Article
Comparative Study on the Performances of a Hinged Flap-Type Wave Energy Converter Considering Both Fixed and Floating Bases
by Mingsheng Chen, Qihao Yun, Thiago S. Hallak, Hao Zhou, Kai Zhang, Yi Yang, Tao Tao, Shi Liu, Wei Jiang and Changjie Li
J. Mar. Sci. Eng. 2024, 12(8), 1416; https://doi.org/10.3390/jmse12081416 - 17 Aug 2024
Cited by 1 | Viewed by 908
Abstract
The dynamical modeling and power optimization of floating wind–wave platforms, especially in regard to configurations based on constrained floating multi-body systems, lack in-depth systematic investigation. In this study, a floating wind-flap platform consisting of a flap-type wave energy converter and a floating offshore [...] Read more.
The dynamical modeling and power optimization of floating wind–wave platforms, especially in regard to configurations based on constrained floating multi-body systems, lack in-depth systematic investigation. In this study, a floating wind-flap platform consisting of a flap-type wave energy converter and a floating offshore wind turbine is solved in the frequency domain considering the mechanical and hydrodynamic couplings of floating multi-body geometries and a model that suits the constraints of the hinge connection, which can accurately calculate the frequency domain dynamic response of the flap-type WEC. The results are compared with bottom-fixed flap-type wave energy converters in the absence of coupling with a floating wind platform. Moreover, combined with traditional optimization methods of power take-off systems for wave energy conversion, an optimization method is developed to suit the requirements of floating wind-flap platform configurations. The results are drawn for a specific operation site in the South China Sea, whereas a sensitivity analysis of the parameters is performed. It is found that the floating wind-flap platform has better wave energy absorption performance in the low-frequency range than the bottom-fixed flap-type wave energy converter; the average power generation in the low-frequency range can increase by up to 150 kW, mainly due to constructive hydrodynamic interactions, though it significantly fluctuates from the sea waves’ frequency range to the high-frequency range. Based on spectral analysis, operational results are drawn for irregular sea states, and the expected power for both types of flap-type WECs is around 30 kW, which points to a similar wave energy absorption performance when comparing the bottom-fixed flap with the flap within the hybrid configuration. Full article
(This article belongs to the Special Issue Offshore Renewable Energy, Second Edition)
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Review

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28 pages, 5707 KiB  
Review
Review on Maximum Power Point Tracking Control Strategy Algorithms for Offshore Floating Photovoltaic Systems
by Lei Huang, Baoyi Pan, Shaoyong Wang, Yingrui Dong and Zihao Mou
J. Mar. Sci. Eng. 2024, 12(12), 2121; https://doi.org/10.3390/jmse12122121 - 21 Nov 2024
Viewed by 739
Abstract
Floating photovoltaic systems are rapidly gaining popularity due to their advantages in conserving land resources and their high energy conversion efficiency, making them a promising option for photovoltaic power generation. However, these systems face challenges in offshore environments characterized by high salinity, humidity, [...] Read more.
Floating photovoltaic systems are rapidly gaining popularity due to their advantages in conserving land resources and their high energy conversion efficiency, making them a promising option for photovoltaic power generation. However, these systems face challenges in offshore environments characterized by high salinity, humidity, and variable irradiation, which necessitate effective maximum power point tracking (MPPT) technologies to optimize performance. Currently, there is limited research in this area, and few reviews analyze it comprehensively. This paper provides a thorough review of MPPT techniques applicable to floating photovoltaic systems, evaluating the suitability of various methods under marine conditions. Traditional algorithms require modifications to address the drift phenomena under uniform irradiation, while different GMPPT techniques exhibit distinct strengths and limitations in partial shading conditions (PSCs). Hardware reconfiguration technologies are not suitable for offshore use, and while sampled data-based techniques are simple, they carry the risk of erroneous judgments. Intelligent technologies face implementation challenges. Hybrid algorithms, which can combine the advantages of multiple approaches, emerge as a more viable solution. This review aims to serve as a valuable reference for engineers researching MPPT technologies for floating photovoltaic systems. Full article
(This article belongs to the Special Issue Offshore Renewable Energy, Second Edition)
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