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Advances in Wind Energy Systems

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A3: Wind, Wave and Tidal Energy".

Deadline for manuscript submissions: closed (1 July 2021) | Viewed by 4727

Special Issue Editors


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Guest Editor
Department of Mechanical Engineering, Politecnico di Milano, 20156 Milano, Italy
Interests: wind energy; floating offshore wind turbine; wind tunnel tests; wind engineering; vortex induced vibration; cables aerodynamics; modal identification

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Politecnico di Milano, 20156 Milano, Italy
Interests: wind energy; floating offshore wind turbine; wind tunnel tests; wind engineering; vortex induced vibration; cables aerodynamics; modal identification
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wind energy is nowadays a relevant research topic due to the pressing need for the development of “green” energy-producing technologies. In this context, great efforts are put into optimizing the available systems in order to reduce the LCOE. More efficient wind turbines and optimized wind farms will make wind energy more competitive and affordable.

We would like to extend a warm invitation to all colleagues who would like to submit their research papers to the Special Issue of Energies on "Advances in Wind Energy Systems". This is a topical Issue dedicated to the recent advances in this broad field. The main criteria for paper acceptance are academic excellence, originality, and novelty of applications or methods.

Editors invite original manuscripts presenting recent advances in this field with special reference to the following topics:

  • Wind farm optimization;
  • Floating offshore wind turbines;
  • Wind tunnel/basin tests on wind turbines;
  • Wind turbine wake analysis;
  • Wind turbine control strategies;
  • Wind turbine field measurements.

Prof. Dr. Marco Belloli
Dr. Sara Muggiasca
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. Energies is an international peer-reviewed open access semimonthly 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

  • wind farm
  • floating structure
  • offshore
  • wind energy
  • aerodynamics
  • hydrodynamics
  • control strategies

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Published Papers (2 papers)

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Research

16 pages, 5792 KiB  
Article
Diffuser Total Efficiency Using Generalized Actuator Disc Model and Its Maximization Method
by Shigeo Yoshida, Masataka Motoyama, Peter Jamieson and Koij Matsuoka
Energies 2021, 14(4), 813; https://doi.org/10.3390/en14040813 - 4 Feb 2021
Cited by 1 | Viewed by 1643
Abstract
The diffuser total efficiency was formulated and defined based on the generalized actuator disc model for the index of the efficiency of the diffuser-alone of the diffuser-augmented wind turbines. An optimization method to maximize the diffuser total efficiency was developed using a genetic [...] Read more.
The diffuser total efficiency was formulated and defined based on the generalized actuator disc model for the index of the efficiency of the diffuser-alone of the diffuser-augmented wind turbines. An optimization method to maximize the diffuser total efficiency was developed using a genetic algorithm and axisymmetric computational fluid dynamics. A case study was conducted for a 10% chord-to-diameter ratio, 2% thickness-to-chord plate, and the crest position at 50% chord of the diffuser. The optimal result showed a diffuser total efficiency of 1.087. Furthermore, 1392 (=48 population × 29 generations) simulation cases of the optimization process showed that high diffuser total efficiency appears at a low-drag coefficient, high-lift coefficient, and 15–25% low diffuser height-to-chord ratio. Full article
(This article belongs to the Special Issue Advances in Wind Energy Systems)
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16 pages, 1506 KiB  
Article
A Steady-State Wind Farm Wake Model Implemented in OpenFAST
by Antonio Cioffi, Claudia Muscari, Paolo Schito and Alberto Zasso
Energies 2020, 13(23), 6158; https://doi.org/10.3390/en13236158 - 24 Nov 2020
Cited by 5 | Viewed by 2610
Abstract
Wake models play a fundamental role in finding optimized solutions in wind farm control. In fact, they allow assessing how wakes develop and interact with each other with the agility required for real-time applications. In this paper, a Gaussian Wake Model (GWM) is [...] Read more.
Wake models play a fundamental role in finding optimized solutions in wind farm control. In fact, they allow assessing how wakes develop and interact with each other with the agility required for real-time applications. In this paper, a Gaussian Wake Model (GWM) is implemented in the OpenFAST framework in a way such that its fidelity is increased with respect to previously implemented models, while enhancing its compatibility with control purposes. The OpenFAST tool is coupled with Floris, NREL’s software based on the GWM, in order to simulate the wake effect on downstream machines (in the case where the downstream rotor is fully covered by the wake, only partially covered by the wake, of the wake is generated by the interaction of more than one turbine), while the rotor aerodynamics is calculated using the BEMT on the actual rotor flow field. We intend this work as a starting point for developing and testing open/closed-loop control logics that will work in real wind farms. To show the suitability of the implementation, the entire model is then compared to Floris. Full article
(This article belongs to the Special Issue Advances in Wind Energy Systems)
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