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Design and Dynamic Analysis of Wind Turbines and Wind Farms

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 (31 October 2021) | Viewed by 12604

Special Issue Editor


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Guest Editor
Department of Electronic and Electrical Engineering, University of Strathclyde Glasgow, Glasgow G1 1XQ, UK
Interests: wind turbine dynamic modelling and analysis; wind farm modelling; control of wind turbines and wind farms; conceptial design of wind turbines

Special Issue Information

Dear Colleagues,

The Guest Editor is inviting submissions to a Special Issue of Energies on the subject area of “Design and Dynamic Analysis of Wind Turbines and Wind Farms”. The extent to which wind energy contributes to meeting power requirements continues to increase globally. Nevertheless, downwards pressure to reduce the cost of energy, particularly for offshore wind, remains. To meet this challenge, ongoing improvements are required across all aspects of the technology and its utilisation. In particular, improved understanding, dynamic analysis and modelling of wind turbines and wind farms arrays are essential to optimise the operation of these offshore assets and to facilitate the design of very large turbines and arrays. These considerations also apply to non-conventional concepts such as floating and airborne wind, which have the potential to increase the exploitable resource and reduce the cost of energy.

This Special Issue will deal with the design and analysis of wind turbines, both conventional and non-conventional, and wind farms, including their control and operational optimisation. Topics of interest for publication include, but are not limited to:

  • Dynamic analysis and modelling of wind turbines and wind farms;
  • Control of wind turbines and wind farms;
  • Optimisation of wind farm operation;
  • Floating wind turbine systems;
  • Airborne wind energy systems;
  • Multi-rotor systems.

Prof. Dr. Bill Leithead
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. 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.

Published Papers (3 papers)

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Research

29 pages, 2867 KiB  
Article
A Methodology for Robust Load Reduction in Wind Turbine Blades Using Flow Control Devices
by Abhineet Gupta, Mario A. Rotea, Mayank Chetan, Mohammad S. Sakib and D. Todd Griffith
Energies 2021, 14(12), 3500; https://doi.org/10.3390/en14123500 - 12 Jun 2021
Cited by 6 | Viewed by 4023
Abstract
Decades of wind turbine research, development and installation have demonstrated reductions in levelized cost of energy (LCOE) resulting from turbines with larger rotor diameters and increased hub heights. Further reductions in LCOE by up-scaling turbine size can be challenged by practical limitations such [...] Read more.
Decades of wind turbine research, development and installation have demonstrated reductions in levelized cost of energy (LCOE) resulting from turbines with larger rotor diameters and increased hub heights. Further reductions in LCOE by up-scaling turbine size can be challenged by practical limitations such as the square-cube law: where the power scales with the square of the blade length and the added mass scales with the volume (the cube). Active blade load control can disrupt this trend, allowing longer blades with less mass. This paper presents the details of the development of a robust load control system to reduce blade fatigue loads. The control system, which we coined sectional lift control or SLC, uses a lift actuator model to emulate an active flow control device. The main contributions of this paper are: (1) Methodology for SLC design to reduce dynamic blade root moments in a neighborhood of the rotor angular frequency (1P). (2) Analysis and numerical evidence supporting the use of a single robust SLC for all wind speeds, without the need for scheduling on wind speed or readily available measurements such as collective pitch or generator angular speed. (3) Intuition and numerical evidence to demonstrate that the SLC and the turbine controller do not interact. (4) Evaluation of the SLC using a full suite of fatigue and turbine performance metrics. Full article
(This article belongs to the Special Issue Design and Dynamic Analysis of Wind Turbines and Wind Farms)
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23 pages, 10830 KiB  
Article
Numerical Analysis of the Dynamic Interaction between Two Closely Spaced Vertical-Axis Wind Turbines
by Yutaka Hara, Yoshifumi Jodai, Tomoyuki Okinaga and Masaru Furukawa
Energies 2021, 14(8), 2286; https://doi.org/10.3390/en14082286 - 19 Apr 2021
Cited by 13 | Viewed by 2049
Abstract
To investigate the optimum layouts of small vertical-axis wind turbines, a two-dimensional analysis of dynamic fluid body interaction is performed via computational fluid dynamics for a rotor pair in various configurations. The rotational speed of each turbine rotor (diameter: D = 50 mm) [...] Read more.
To investigate the optimum layouts of small vertical-axis wind turbines, a two-dimensional analysis of dynamic fluid body interaction is performed via computational fluid dynamics for a rotor pair in various configurations. The rotational speed of each turbine rotor (diameter: D = 50 mm) varies based on the equation of motion. First, the dependence of rotor performance on the gap distance (gap) between two rotors is investigated. For parallel layouts, counter-down (CD) layouts with blades moving downwind in the gap region yield a higher mean power than counter-up (CU) layouts with blades moving upwind in the gap region. CD layouts with gap/D = 0.5–1.0 yield a maximum average power that is 23% higher than that of an isolated single rotor. Assuming isotropic bidirectional wind speed, co-rotating (CO) layouts with the same rotational direction are superior to the combination of CD and CU layouts regardless of the gap distance. For tandem layouts, the inverse-rotation (IR) configuration shows an earlier wake recovery than the CO configuration. For 16-wind-direction layouts, both the IR and CO configurations indicate similar power distribution at gap/D = 2.0. For the first time, this study demonstrates the phase synchronization of two rotors via numerical simulation. Full article
(This article belongs to the Special Issue Design and Dynamic Analysis of Wind Turbines and Wind Farms)
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34 pages, 1701 KiB  
Article
Dynamic Modeling of an Offshore Floating Wind Turbine for Application in the Mediterranean Sea
by Lorenzo Cottura, Riccardo Caradonna, Alberto Ghigo, Riccardo Novo, Giovanni Bracco and Giuliana Mattiazzo
Energies 2021, 14(1), 248; https://doi.org/10.3390/en14010248 - 05 Jan 2021
Cited by 21 | Viewed by 5649
Abstract
Wind power is emerging as one of the most sustainable and low-cost options for energy production. Far-offshore floating wind turbines are attractive in view of exploiting high wind availability sites while minimizing environmental and landscape impact. In the last few years, some offshore [...] Read more.
Wind power is emerging as one of the most sustainable and low-cost options for energy production. Far-offshore floating wind turbines are attractive in view of exploiting high wind availability sites while minimizing environmental and landscape impact. In the last few years, some offshore floating wind farms were deployed in Northern Europe for technology validation, with very promising results. At present time, however, no offshore wind farm installations have been developed in the Mediterranean Sea. The aim of this work is to comprehensively model an offshore floating wind turbine and examine the behavior resulting from a wide spectrum of sea and wind states typical of the Mediterranean Sea. The flexible and accessible in-house model developed for this purpose is compared with the reference model FAST v8.16 for verifying its reliability. Then, a simulation campaign is carried out to estimate the wind turbine LCOE (Levelized Cost of Energy). Based on this, the best substructure is chosen and the convenience of the investment is evaluated. Full article
(This article belongs to the Special Issue Design and Dynamic Analysis of Wind Turbines and Wind Farms)
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