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JMSE
Special Issues
Emerging Trends, Challenges and Opportunities in Offshore Wind Technology
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Emerging Trends, Challenges and Opportunities in Offshore Wind Technology

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

Deadline for manuscript submissions: closed (15 June 2024) | Viewed by 10511

Special Issue Editors

Dr. Yulin Si

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Guest Editor
Institute of Ocean Engineering and Technology, Ocean College, Zhejiang University, Zhoushan 316021, China
Interests: Intelligent control technology for ocean equipment
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jianhua Zhang

E-Mail Website
Co-Guest Editor
College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China
Interests: offshore wind turbines; offshore floating photovoltaic systems; structural dynamics
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Xinliang Tian

E-Mail Website1 Website2
Co-Guest Editor
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
Interests: fluid dynamics of thin plates; ocean renewable devices; fluid robotics

Special Issue Information

Dear Colleagues,

Offshore wind will play a key role in accelerating the low-carbon energy transition to achieve the Net Zero goal, and global installed offshore wind capacity is expected to reach 630 gigawatts (GW) by 2050. Under these circumstances, offshore wind technology has witness rapid development during the past decade, and continuous technology innovations are promoting wind energy harvesting to become cheaper, safer and further offshore. The purpose of this Special Issue is to publish the most exciting research with respect to offshore wind technology, demonstrate emerging trends, challenges and opportunities in offshore wind development, as well as provide a rapid turnaround time regarding reviewing and publishing, and disseminate the articles freely for research, teaching and reference purposes.

Dr. Yulin Si
Prof. Dr. Jianhua Zhang
Prof. Dr. Xinliang Tian
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

  • supporting structures
  • dynamics and control
  • grid integration
  • floating wind turbines
  • offshore wind farms
  • operation and maintenance
  • AI and robotics
  • environmental assessment
  • marine energy joint exploration
  • integrated utilization with hydrogen, fishery etc

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (4 papers)

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Research

19 pages, 8120 KiB  
Article
Dynamic Response and Mooring Fracture Performance Analysis of a Semi-Submersible Floating Offshore Wind Turbine under Freak Waves
by Baolong Liu and Jianxing Yu
J. Mar. Sci. Eng. 2024, 12(8), 1414; https://doi.org/10.3390/jmse12081414 - 16 Aug 2024
Cited by 2 | Viewed by 1855
Abstract
Among the extreme sea scenarios, freak waves pose a serious threat to offshore structures, potentially leading to structural failure, such as mooring line failure, floater capsizing, or structural damage. In this study, we conducted a numerical investigation on the transient performance of a [...] Read more.
Among the extreme sea scenarios, freak waves pose a serious threat to offshore structures, potentially leading to structural failure, such as mooring line failure, floater capsizing, or structural damage. In this study, we conducted a numerical investigation on the transient performance of a semi-submersible floating offshore wind turbine (FOWT) equipped with a redundant mooring system under the influence of freak waves and mooring failure. Firstly, we analyzed the dynamic responses of an intact-mooring-system FOWT under a freak wave. Next, we examined the effect of mooring failure on the transient responses. The results indicate that floater motions exhibit significant differences in the interval of freak wave crests. The impact of freak waves increases the blade tip deformation and tower root bending moment, while also affecting the tension of the mooring line and the aerodynamic performance of the wind turbine. Consecutive fracture with an interval of 20 s significantly increases surge motion and reduces output power. When mooring lines break separately with an interval of 400 s, the amplification in the responses is noticeably lower compared to consecutive fracture cases. Full article
(This article belongs to the Special Issue Emerging Trends, Challenges and Opportunities in Offshore Wind Technology)
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17 pages, 1493 KiB  
Article
Wind and Wave-Induced Vibration Reduction Control for Floating Offshore Wind Turbine Using Delayed Signals
by Shouxiang Yan, Yilong Wang, Fengbin Pang, Wei Zhang and Bao-Lin Zhang
J. Mar. Sci. Eng. 2024, 12(7), 1113; https://doi.org/10.3390/jmse12071113 - 2 Jul 2024
Cited by 1 | Viewed by 1419
Abstract
Active vibration control is a critical issue of the wind turbine in the field of marine energy. First, based on a three-degree-of-freedom wind turbine, a state space model subject to wind and wave loads is obtained. Then, a delayed state feedback control scheme [...] Read more.
Active vibration control is a critical issue of the wind turbine in the field of marine energy. First, based on a three-degree-of-freedom wind turbine, a state space model subject to wind and wave loads is obtained. Then, a delayed state feedback control scheme is illustrated to reduce the vibration of platform pitch angle and tower top foreaft displacement, where the control channel includes time-delay state signals. The designed controller’s existence conditions are investigated. The simulation results show that the delayed feedback H∞ controller can significantly suppress wind- and wave-induced vibration of the wind turbine. Furthermore, it presents potential advantages over the delay-free feedback H∞ controller and the classic linear quadratic regulator in two aspects: vibration control performance and control cost. Full article
(This article belongs to the Special Issue Emerging Trends, Challenges and Opportunities in Offshore Wind Technology)
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18 pages, 4735 KiB  
Article
New Adaptive Super-Twisting Extended-State Observer-Based Sliding Mode Scheme with Application to FOWT Pitch Control
by Ronglin Ma, Fei Lu Siaw, Tzer Hwai Gilbert Thio and Wenxiang Yang
J. Mar. Sci. Eng. 2024, 12(6), 902; https://doi.org/10.3390/jmse12060902 - 28 May 2024
Cited by 3 | Viewed by 1686
Abstract
This paper details the transformation of the velocity or position-tracking problem of a class of uncertain systems using finite time stability control for first-order uncertain systems. A new composite extended-state observer sliding mode (ESOSM) scheme is proposed, which includes an adaptive super-twisting-like ESO [...] Read more.
This paper details the transformation of the velocity or position-tracking problem of a class of uncertain systems using finite time stability control for first-order uncertain systems. A new composite extended-state observer sliding mode (ESOSM) scheme is proposed, which includes an adaptive super-twisting-like ESO and an adaptive super-twisting controller. The adaptive super-twisting controller is implemented through a barrier function-based second-order sliding mode algorithm. To further reduce control chattering and improve control performance, the adaptive super-twisting-like ESO, which employs high-order terms in the super-twisting algorithm to accelerate convergence, is designed to observe the lumped uncertainty in real time. The advantages of the proposed scheme are verified by a numerical example and application with regard to floating offshore wind turbine (FOWT) pitch control. Compared with proportional integral (PI) and adaptive super-twisting sliding mode (ASTSM) schemes, better results are obtained in velocity tracking and fatigue load suppression. For the FOWT pitch control application, the platform roll, pitch, and yaw are decreased by 3%, 2%, and 4%, respectively, compared to the PI scheme at an average turbulent wind speed of 17 m/s and turbulence intensity of 17.27%. Full article
(This article belongs to the Special Issue Emerging Trends, Challenges and Opportunities in Offshore Wind Technology)
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24 pages, 13896 KiB  
Article
Catenary Mooring Length Control for Motion Mitigation of Semi-Submersible Floating Wind Turbines
by Yiming Zhou, Xuefeng Zhang, Jianjun Chen, Ruichao Liu, Jili Sun and Yulin Si
J. Mar. Sci. Eng. 2024, 12(4), 628; https://doi.org/10.3390/jmse12040628 - 8 Apr 2024
Cited by 4 | Viewed by 2363
Abstract
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 [...] Read more.
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. Full article
(This article belongs to the Special Issue Emerging Trends, Challenges and Opportunities in Offshore Wind Technology)
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