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Inventions
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New Advances and Challenges in Wind Energy Extraction II
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New Advances and Challenges in Wind Energy Extraction II

A special issue of Inventions (ISSN 2411-5134). This special issue belongs to the section "Inventions and Innovation in Energy and Thermal/Fluidic Science".

Deadline for manuscript submissions: closed (31 July 2022) | Viewed by 12073

Special Issue Editor

Prof. Dr. Eugen Rusu

E-Mail Website
Guest Editor
Department of Mechanical Engineering, University Dunarea de Jos of Galati, Galati, Romania
Interests: ocean energy; marine environment; ocean and coastal engineering; renewable energy; wind turbines; wave energy converters; coastal hazards; sea waves modeling; surf zone hydrodynamics; wave-current interactions
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear colleagues,

We are inviting submissions to a Special Issue of the Inventions open access journal on the subject area of "New Advances and Challenges in Wind Energy Extraction”. Taking into account the very rapid growth of the wind industry, both onshore and offshore, this Special Issue intends to become a premier forum for the dissemination of new advances and challenges in the field of the wind power extraction, presenting theoretical, experimental and applied results. From this perspective, it expected that this Special Issue will bring together leading research in domains of interest from all around the world. Furthermore, through this Special Issue we hope to bring attention to some of the invaluable advances in wind energy extraction and related information to the readers of Inventions.

Topics of interest for publication include, but are not limited to:

  • Innovative concepts in wind power generation
  • Design and simulation of wind energy generators
  • Turbine design and applications
  • CFD modeling of wind turbines
  • Control of wind energy generators
  • Wind energy and environmental regulations
  • Evaluation of wind power resources in the context of climate change
  • Wind modeling and measurements
  • Economic assessments and cost of energy decreases for wind power
  • Offshore wind
  • Floating wind platforms

Prof. Dr. Eugen Rusu
Guest Editor

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. Inventions 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 1800 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 power
  • Wind turbines
  • Wind models
  • Measurements
  • Smart grids
  • Offshore wind
  • Floating wind
  • Numerical modelling
  • Laboratory modeling
  • Environmental impact
  • Economic assessments

Published Papers (3 papers)

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Research

30 pages, 7586 KiB  
Article
Numerical Investigation of Winglet Aerodynamics and Dimple Effect of NACA 0017 Airfoil for a Freight Aircraft
by Matthew Thomas Lewthwaite and Chiemela Victor Amaechi
Inventions 2022, 7(1), 31; https://doi.org/10.3390/inventions7010031 - 07 Mar 2022
Cited by 8 | Viewed by 6034
Abstract
Drag reduction is an ever-present challenge within the aeronautical engineering industry. This paper presents two substantial wing modifications: the addition of a winglet of a freighter aircraft and a dimpled wing on the NACA 0017 aerofoils. Studies on nine (9) different geometries of [...] Read more.
Drag reduction is an ever-present challenge within the aeronautical engineering industry. This paper presents two substantial wing modifications: the addition of a winglet of a freighter aircraft and a dimpled wing on the NACA 0017 aerofoils. Studies on nine (9) different geometries of dimpled aerofoils were performed against a control model of an aerofoil without any dimple. Computational fluid dynamics (CFD) analysis was performed using two (2) commercial CFD platforms. This paper also explored two novel solutions of aircraft optimisation to mitigate the effects of drag and leading-edge pressure, while increasing the effect of lift. The optimised performance model of a freighter aircraft increased its aerodynamic efficiency. The study found that at take-off velocity of 82 m/s, winglets decreased pressure on the wing by 16.31%, through flow redirection and better flow integration into aerofoils wake. The study also analysed the separation layer and its effect through the appropriate use of the dimple effect. Increased lift effects were observed on a NACA 0017 aerofoil. Despite the low increase in drag of 6% from the modifications, the resultant L/D ratio was highly increased. This study also faced some challenges with validating the model. Hence some validation approaches were taken, and some other approaches suggested for future studies. Full article
(This article belongs to the Special Issue New Advances and Challenges in Wind Energy Extraction II)
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14 pages, 16398 KiB  
Article
A Robust Interval Type-2 Fuzzy Logic Controller for Variable Speed Wind Turbines Based on a Doubly Fed Induction Generator
by Ahmed Vall Hemeyine, Ahmed Abbou, Anass Bakouri, Mohcine Mokhlis and Sidi Mohamed ould Mohamed El Moustapha
Inventions 2021, 6(2), 21; https://doi.org/10.3390/inventions6020021 - 24 Mar 2021
Cited by 13 | Viewed by 2816
Abstract
This paper presents an implementation of a new robust control strategy based on an interval type-2 fuzzy logic controller (IT2-FLC) applied to the wind energy conversion system (WECS). The wind generator used was a variable speed wind turbine based on a doubly fed [...] Read more.
This paper presents an implementation of a new robust control strategy based on an interval type-2 fuzzy logic controller (IT2-FLC) applied to the wind energy conversion system (WECS). The wind generator used was a variable speed wind turbine based on a doubly fed induction generator (DFIG). Fuzzy logic concepts have been applied with great success in many applications worldwide. So far, the vast majority of systems have used type-1 fuzzy logic controllers. However, T1-FLC cannot handle the high level of uncertainty in systems (complex and non-linear systems). The amount of uncertainty in a system could be reduced by using type-2 fuzzy logic since it offers better capabilities to handle linguistic uncertainties by modeling vagueness and unreliability of information. A new concept based on an interval type-2 fuzzy logic controller (IT-2 FLC) was developed because of its uncertainty management capabilities. Both these control strategies were designed and their performances compared for the purpose of showing the control most efficient in terms of reference tracking and robustness. We made a comparison between the performance of the type-1 fuzzy logic controller (T1-FLC) and interval type-2 fuzzy logic controller (IT2-FLC). The simulation results clearly manifest the height robustness of the interval type-2 fuzzy logic controller in comparison to the T1-FLC in terms of rise time, settling time, and overshoot value. The simulations were realized by MATLAB/Simulink software. Full article
(This article belongs to the Special Issue New Advances and Challenges in Wind Energy Extraction II)
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13 pages, 1618 KiB  
Article
Optimization of Power and Levelized Cost for Shrouded Small Wind Turbine
by Hasanali Khojasteh, Younes Noorollahi, Mojtaba Tahani and Mehran Masdari
Inventions 2020, 5(4), 59; https://doi.org/10.3390/inventions5040059 - 09 Dec 2020
Cited by 5 | Viewed by 2426
Abstract
Nowadays, by increasing energy demand and considering the importance of environmental issues in recent decades, the use of renewable energies is expanding. Among renewable energies, wind power and its technology are growing and evolving more rapidly. Resource assessment in Iran has revealed the [...] Read more.
Nowadays, by increasing energy demand and considering the importance of environmental issues in recent decades, the use of renewable energies is expanding. Among renewable energies, wind power and its technology are growing and evolving more rapidly. Resource assessment in Iran has revealed the significant potential of wind energy around the country. To further develop wind energy in the country and create large-scale wind power plants, the consideration of distributed power generation using small wind turbines for applications in agricultural and residential use is needed. Conventional small wind turbines and small wind lens turbines have been developed in recent years. In this research project, a small wind lens turbine is designed. The advantages of this turbine are an increased production capacity and reduced cut-in speed and noise pollution. In this study, a lens (or shroud) is added to a small turbine, and the maximized annual energy production (AEP) and minimization of the levelized cost of energy (LCOE) are modeled. We applied the NSGA-II algorithm for optimization to find the best answer. The input parameters in the objective function of the AEP are cut-in, cut-out, rated speeds, scale factor, and shape factor. Additionally, the input parameters in the objective function of the LCOE are the power production, initial capital cost, annual operating expenses, and balance of energy. The results indicate that installing a wind lens turbine in Kish Island led to an LCOE decrease of 56% on average, and we can see an 83% increase in the AEP. In the Firoozkooh area, an average reduction of 59% in the LCOE and 74% increase in the AEP for a wind lens turbine is observed. Full article
(This article belongs to the Special Issue New Advances and Challenges in Wind Energy Extraction II)
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