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Novel Techno-Economic Solutions for Offshore Renewable Energy Systems
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Novel Techno-Economic Solutions for Offshore Renewable Energy Systems

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: closed (30 April 2021) | Viewed by 6610

Special Issue Editors

Prof. Dr. Rafael Morales

E-Mail Website
Guest Editor
Electrénica Automática y Comunicaciones, Universidad de Castilla-La Mancha, Albacete, Spain
Interests: offshore sustainable renewable energy systems; maintenance maneuvers; robotics; control; automation and sensor integration applied to offshore renewable energy systems
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Eva Segura

E-Mail Website
Guest Editor
Escuela Técnica Superior de Ingenieros Industriales de Ciudad Real, Universidad de Castilla-La Mancha, 13071 Ciudad Real, Spain
Interests: tidal and ocean energy; sustainable technologies; maintenance maneuvers; life-cycle costs; techno-economic modeling; economic–financial viability; energy strategies and business modelling
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

This Special Issue aims to exhibit the latest research achievements, findings, and ideas from researchers working in offshore renewable energy systems in order to outline the current state-of-the-art and highlight the emerging trends and challenges in this field, ranging from mathematical and economic modeling to methodological aspects.

Producing truly reliable offshore renewable energy systems goes beyond overcoming a series of technological challenges, ranging from the conception, design, and operation of new devices with improvements such as stability, redundancy, seakeeping, or survival within the adverse conditions of the marine environment. On the other hand, these technical advances demand to be supported by economic analysis that need to be developed in an accurate manner in order not to compromise the commercial exploitations of these offshore renewable energy technologies. The results of the developed models help identify possible market applications and provide an estimate of long-term impacts. These methods, together with other forms of decision analysis, are very useful in the development and improvement of offshore renewable energy objectives since they will allow comparison of different decisions, evaluating their political and economic feasibility and providing guidance on potential financial and technological risks.

In this Special Issue proposal, potential topics include but are not limited to the following:

  • Robotics and control algorithms
  • Signal processing
  • Offshore renewable energy conversion systems
  • Offshore renewable energy resources
  • Risk and reliability models
  • Lifecycle assessment
  • Techno-economic modeling
  • Production costs
  • Energy strategies
  • Business modeling
  • Levelized cost of electricity protections

Prof. Dr. Rafael Morales
Prof. Dr. Eva Segura
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

  • robotics and control algorithms
  • signal processing
  • offshore renewable energy conversion systems
  • offshore renewable energy resources
  • risk and reliability models
  • lifecycle assessment
  • techno-economic modeling
  • production costs
  • energy strategies
  • business modeling
  • levelized cost of electricity protections

Published Papers (2 papers)

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Research

48 pages, 14945 KiB  
Article
Numerical Assessment on the Dynamic Behaviour of Submarine Hoses Attached to CALM Buoy Configured as Lazy-S under Water Waves
by Chiemela Victor Amaechi, Facheng Wang and Jianqiao Ye
J. Mar. Sci. Eng. 2021, 9(10), 1130; https://doi.org/10.3390/jmse9101130 - 15 Oct 2021
Cited by 24 | Viewed by 3421
Abstract
Recent design challenges in ocean observations, energy storage, offloading/discharging, and loading operations in both the offshore-renewable industry have led to advances in the application of catenary anchor leg moorings (CALM) buoys. Due to different seabed profiles, soil stiffness and environmental conditions, there is [...] Read more.
Recent design challenges in ocean observations, energy storage, offloading/discharging, and loading operations in both the offshore-renewable industry have led to advances in the application of catenary anchor leg moorings (CALM) buoys. Due to different seabed profiles, soil stiffness and environmental conditions, there is the need for numerical assessment to investigate the behaviour of the submarine hoses, based on the structural and hydrodynamic behaviour. In this study, experimental and numerical investigations are carried out on the dynamic behaviour of the submarine hoses attached to a CALM buoy in Lazy-S configuration. Six mooring lines are attached to the CALM buoy with a water depth of 100 m in the numerical model. A hydrodynamic model utilising ANSYS AQWA was developed then coupled unto the dynamic model in Orcina’s Orcaflex. The studies were carried out to study the effect of flow angles, wave height, soil stiffness and hydrodynamic loads on the structural behaviour of the submarine hoses. Waves at different angles to the submarine hose affected the effective tension more where the hose bends due to the floats attached. Parametric studies were carried out on both linear and nonlinear seabed models, and recommendations were made from the investigations on the submarine hose models. Full article
(This article belongs to the Special Issue Novel Techno-Economic Solutions for Offshore Renewable Energy Systems)
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27 pages, 7500 KiB  
Article
A New Proposal for the Closed-Loop Orientation Control of a Windfloat Turbine System
by Leticia Del Horno, José A. Somolinos, Eva Segura and Rafael Morales
J. Mar. Sci. Eng. 2021, 9(1), 26; https://doi.org/10.3390/jmse9010026 - 29 Dec 2020
Cited by 6 | Viewed by 2435
Abstract
It is believed that offshore wind power will play an important role in fulfilling the environmental commitments made in the Paris Agreement signed in 2015. The use of floating solutions in offshore wind power is gaining prominence, since it allows the expansion of [...] Read more.
It is believed that offshore wind power will play an important role in fulfilling the environmental commitments made in the Paris Agreement signed in 2015. The use of floating solutions in offshore wind power is gaining prominence, since it allows the expansion of these technologies to a large number of regions in which this has not been technically feasible until now. One of the current issues that needs to be studied in detail as regards offshore wind structures are the oscillations produced by the waves and the wind that could cause important problems in the turbine such as the reduction of the efficiency and performance or the appearance of structural damages owing to undesired loads on the blades, among others. This signifies that the inclination of the structure must not exceed a certain small value in the operating phase. This paper, therefore, presents a simple dynamic modeling and a nonlinear multivariable control model-based system for a Windfloat turbine whose main function is to stabilize the system and to keep it vertical in order to improve its operation and, therefore, maintain the offshore wind turbine in the optimal conditions required to harness energy from the wind. The effectiveness of both the dynamic model and the proposed control algorithm has been demonstrated by developing various simulations in a MATLAB-Orcaflex environment, in which the Windfloat structure proved to have very small vertical deviations when wind impinges over the rotor, despite the undesirable effects caused by parametric uncertainties (e.g., the effect of the anchoring cables) in the system and unmodeled unmatched perturbations (such as the effects of the wind and the waves on the Windfloat turbine). Full article
(This article belongs to the Special Issue Novel Techno-Economic Solutions for Offshore Renewable Energy Systems)
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