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Frontiers in Offshore Wind Energy
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Frontiers in Offshore Wind Energy

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 (25 January 2023) | Viewed by 5347

Special Issue Editors

Prof. Dr. Shiu-Wu Chau

E-Mail Website
Guest Editor
Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan
Interests: offshore wind energy; offshore wind farm; floating offshore wind turbine
Dr. Shun-Han Yang

E-Mail Website
Guest Editor
Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan
Interests: marine renewable energy; offshore structure
Dr. Tsung-Yueh Lin

E-Mail Website
Guest Editor
Department of Engineering Science and Ocean Engineering, National Taiwan University, Taipei, Taiwan
Interests: marine hydrodynamics; design optimization; model test

Special Issue Information

Dear Colleagues,

With the fast development of offshore wind around the world, several major trends of offshore wind energy are emerging in recent years. High rated powers are designed for offshore wind turbines of large rotor size where the locations of offshore wind farms gradually move from the nearshore region with limited water depth toward the area of deep waters. The growth of power clearly emphasizes the impact of wake interaction between upstream and downstream wind turbines. The increase of water depth implies that the wind turbines will be installed on floating platforms instead of fixed-bottom structures due to cost reasons. As the offshore wind turbines are world widely installed, the confronted metocean and geotech conditions greatly vary, such as the challenges of typhoons and earthquakes may play a substantial role in the design of offshore wind turbines. The corresponding construction and transportation, as well as maintenance and operation of offshore wind farms, are also of great concern for the developers who target offshore wind farms. The design and control of wind turbines also require new innovations to accommodate a constant motion response to wind and waves as well as a smooth and safe operation. All related researches arising in the offshore wind sector are welcome to contribute to this special issue.

Prof. Dr. Shiu-Wu Chau
Dr. Shun-Han Yang
Dr. Tsung-Yueh Lin
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

  • offshore wind
  • wind turbine and wind farm
  • bottom-fixed structure and floating platform
  • construction and transportation
  • maintenance and operation
  • seakeeping and motion response
  • power and wake interaction
  • metocean measurement and prediction
  • underwater technology
  • regulation and integration
  • erosion and protection
  • geotech engineering

Published Papers (2 papers)

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Research

34 pages, 23772 KiB  
Article
Normal Operating Performance Study of 15 MW Floating Wind Turbine System Using Semisubmersible Taida Floating Platform in Hsinchu Offshore Area
by Hoi-Yi Tong, Tsung-Yueh Lin and Shiu-Wu Chau
J. Mar. Sci. Eng. 2023, 11(2), 457; https://doi.org/10.3390/jmse11020457 - 20 Feb 2023
Cited by 1 | Viewed by 2630
Abstract
This study predicted the motion response and power performance of a floating wind turbine system equipped with a semisubmersible Taida platform, an IEA 15 MW wind turbine, and a 3 × 2 mooring design in the Hsinchu offshore area in the Taiwan Strait. [...] Read more.
This study predicted the motion response and power performance of a floating wind turbine system equipped with a semisubmersible Taida platform, an IEA 15 MW wind turbine, and a 3 × 2 mooring design in the Hsinchu offshore area in the Taiwan Strait. The hydrodynamic properties were calculated using ANSYS-AQWA and STAR-CCM+. The motion equations were solved by OrcaFlex to obtain the motion response and generator power, as well as the dynamics of the mooring system and aerodynamics of the wind turbine. The waves were assumed to share the same direction as the wind. This study compared the mean values and standard deviations of the motion response, generator power, and mooring line tension between the potential- and viscous-flow approaches by considering the combination of seven wind directions and four current directions under two wave conditions in the Hsinchu offshore area. The numerical prediction shows that the viscous effect has a larger impact on the hydrodynamic properties in the heave, roll, and pitch motions. The angle between the leading mooring line of the system and dominant wind direction in the Taiwan Strait, which comes from the northeast, should be from 120° to 180° in order to deliver a relatively favorable performance of the system. Full article
(This article belongs to the Special Issue Frontiers in Offshore Wind Energy)
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18 pages, 9761 KiB  
Article
Dynamic Co-Simulation Analysis and Control of an IEA 15 MW Offshore Floating Semi-Submersible Wind Turbine under Taiwan Offshore-Wind-Farm Conditions of Wind and Wave
by Cherng-Jer Chueh, Chun-Hung Chien, Ching Lin, Ting-Yan Lin and Mao-Hsiung Chiang
J. Mar. Sci. Eng. 2023, 11(1), 173; https://doi.org/10.3390/jmse11010173 - 10 Jan 2023
Cited by 2 | Viewed by 2092
Abstract
This study aims to develop dynamic co-simulation and control for analyzing the IEA 15 MW semi-submersible floating wind turbine under Taiwan offshore-wind-farm conditions of wind and wave. The IEA 15 MW wind turbine is mounted on a UMaine VolturnUS-S reference platform with a [...] Read more.
This study aims to develop dynamic co-simulation and control for analyzing the IEA 15 MW semi-submersible floating wind turbine under Taiwan offshore-wind-farm conditions of wind and wave. The IEA 15 MW wind turbine is mounted on a UMaine VolturnUS-S reference platform with a mooring system designed for a water depth of 70 m, in this study. The dynamic co-simulation combines software of SIMPACK, MATLAB/SIMULINK, AeroDyn, HydroDyn, WAMIT, and MAP++ to achieve the complex dynamic simulation of aerodynamics, hydrodynamics, mechanism dynamics and control system dynamics. In addition, this study proposes a novel power-control strategy combining fuzzy sliding-mode control with additional pitching-rate feedback. Since the motion of the floating platform, especially the pitching motion, contributes to power oscillation, the proposed novel power-control strategy with additional pitching-rate feedback can reduce the influence of the floating-platform oscillation motion, and is verified under different conditions. Full article
(This article belongs to the Special Issue Frontiers in Offshore Wind Energy)
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