Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
5.5
3.2
Journals
Energies
Special Issues
Design, Fabrication and Performance of Wind Turbines 2020
energies-logo
Submit to Energies Review for Energies Propose a Special Issue

Journal Menu

► Journal Menu

Journal Browser

► Journal Browser
share announcement

Design, Fabrication and Performance of Wind Turbines 2020

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 (30 June 2020) | Viewed by 21395

Printed Edition Available!
A printed edition of this Special Issue is available here.

Special Issue Editor

Prof. Dr. Kyung Chun Kim

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Pusan National University, Busan 46241, Republic of Korea
Interests: organic rankine cycle; heat transfer and heat exchangers; thermodynamics; experimental fluid mechanics; numerical modelling; advance power generation technologies
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The consumption of fossil fuels has increased, resulting in high CO2 emissions and serious climate change. Research on renewable energy is actively underway in order to solve these environmental problems, and in anticipation of the depletion of fossil fuels. Wind energy is an environmentally-friendly renewable energy source that does not cause environmental pollution, and its use is rapidly spreading around the world. From small-scale vertical axis wind turbines for urban usage to large-scale horizontal axis wind turbines for offshore wind farms, design, fabrication, and optimization technologies are highly required to manage wind energy effectively. Moreover, some new potentials, such as wind farm design, fluid-structure interaction, aero-acoustics, fabrication methods and performance tests by experimental and computational fluid dynamics should be engaged in modern wind turbine communities. Basic objectives are improving the reliability, promoting high efficiency of wind turbines, dynamic performance, reducing wind turbine generated noise and improving power generation efficiencies through high-fidelity approaches. Managing such a wide range of wind turbine scales and usages, design, fabrication, and performance test protocols for various wind turbines is a challenging issue. This Special Issue aims at encouraging researchers to address solutions to overcome the issue.

Prof. Dr. Kyung Chun Kim
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.

Keywords

  • wind turbines
  • design
  • fabrication
  • performance test
  • control
  • optimization
  • aerodynamics
  • aero-acoustics
  • computational fluid dynamics
  • wind farm

Published Papers (6 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

15 pages, 7375 KiB  
Article
Prediction and Validation of the Annual Energy Production of a Wind Turbine Using WindSim and a Dynamic Wind Turbine Model
by Yuan Song and Insu Paek
Energies 2020, 13(24), 6604; https://doi.org/10.3390/en13246604 - 14 Dec 2020
Cited by 7 | Viewed by 2298
Abstract
In this study, dynamic simulations of a wind turbine were performed to predict its dynamic performance, and the results were experimentally validated. The dynamic simulation received time-domain wind speed and direction data and predicted the power output by applying control algorithms. The target [...] Read more.
In this study, dynamic simulations of a wind turbine were performed to predict its dynamic performance, and the results were experimentally validated. The dynamic simulation received time-domain wind speed and direction data and predicted the power output by applying control algorithms. The target wind turbine for the simulation was a 2 MW wind turbine installed in an onshore wind farm. The wind speed and direction data for the simulation were obtained from WindSim, which is a commercial computational fluid dynamics (CFD) code for wind farm design, and measured wind speed and direction data with a mast were used for WindSim. For the simulation, the wind turbine controller was tuned to match the power curve of the target wind turbine. The dynamic simulation was performed for a period of one year, and the results were compared with the results from WindSim and the measurement. It was found from the comparison that the annual energy production (AEP) of a wind turbine can be accurately predicted using a dynamic wind turbine model with a controller that takes into account both power regulations and yaw actions with wind speed and direction data obtained from WindSim. Full article
(This article belongs to the Special Issue Design, Fabrication and Performance of Wind Turbines 2020)
►▼ Show Figures

Figure 1

14 pages, 5614 KiB  
Article
A Hybrid RCS Reduction Method for Wind Turbines
by Shyh-Kuang Ueng
Energies 2020, 13(19), 5078; https://doi.org/10.3390/en13195078 - 29 Sep 2020
Cited by 2 | Viewed by 1787
Abstract
Wind turbine towers produce significant scatterings when illuminated by radars. Their reflectivity affects air traffic control, military surveillance, vessel tracking, and weather data sensing processes. Reducing the radar cross-section (RCS) of wind turbines is an essential task when building wind farms. It has [...] Read more.
Wind turbine towers produce significant scatterings when illuminated by radars. Their reflectivity affects air traffic control, military surveillance, vessel tracking, and weather data sensing processes. Reducing the radar cross-section (RCS) of wind turbines is an essential task when building wind farms. It has been proved that round and bumpy structures can scatter radar waves and reduce the RCS of a reflector. Other research showed that taper towers generate smaller radar returns than cylindrical towers. In this research, we combine both strategies to devise a more effective method for designing wind turbine towers in the hope that their RCS can be further reduced. The test results reveal that the proposed method out-performs current reshaping methods. Wind turbine towers possessing taper shapes and periodic surface bumps deflect incident electromagnetic waves to insignificant directions. Thus, radar returns in the back-scattering directions decrease. Other experiments also verify that the proposed method maintains its effectiveness for radar waves with varying frequencies and polarization. Full article
(This article belongs to the Special Issue Design, Fabrication and Performance of Wind Turbines 2020)
►▼ Show Figures

Figure 1

14 pages, 6385 KiB  
Article
Electronically Controlled Actuators for a Micro Wind Turbine Furling Mechanism
by Mihai Chirca, Marius Dranca, Claudiu Alexandru Oprea, Petre-Dorel Teodosescu, Alexandru Madalin Pacuraru, Calin Neamtu and Stefan Breban
Energies 2020, 13(16), 4207; https://doi.org/10.3390/en13164207 - 14 Aug 2020
Cited by 5 | Viewed by 2295
Abstract
This paper presents two electromechanical systems used for the overspeed protection of small wind turbines. The actuators have the purpose of rotating the back rudder (tail vane) of the wind turbine when the blades are overspeeding. The rudder rotation angle is 90 degrees [...] Read more.
This paper presents two electromechanical systems used for the overspeed protection of small wind turbines. The actuators have the purpose of rotating the back rudder (tail vane) of the wind turbine when the blades are overspeeding. The rudder rotation angle is 90 degrees in order to completely turn the wind turbine blades away from the wind flow direction. The first device is a new limited-angle torque electromechanical actuator consisting of a device with a simplified structure composed of four permanent magnets (two on each side) glued on a rotor mounted between two stator poles built from ordinary rectangular construction pipes and an electronic control unit. The second device is based on a regular stepper motor actuator with a reduction gear and an appropriate control scheme to maximize the energy harvested at high, over-nominal wind speeds. A generic comparison is provided for the proposed solutions. Full article
(This article belongs to the Special Issue Design, Fabrication and Performance of Wind Turbines 2020)
►▼ Show Figures

Graphical abstract

22 pages, 1458 KiB  
Article
A Control Scheme with the Variable-Speed Pitch System for Wind Turbines during a Zero-Voltage Ride Through
by Enyu Cai, Yunqiang Yan, Lei Dong and Xiaozhong Liao
Energies 2020, 13(13), 3344; https://doi.org/10.3390/en13133344 - 30 Jun 2020
Cited by 3 | Viewed by 2015
Abstract
Zero-voltage ride through (ZVRT) is the extreme case of low-voltage ride through (LVRT), which represents the optimal grid-connection capability of wind turbines (WTs). Enforcing ZVRT will improve the dynamic performance of WTs and therefore significantly enhance the resiliency of renewable-rich grids. A control [...] Read more.
Zero-voltage ride through (ZVRT) is the extreme case of low-voltage ride through (LVRT), which represents the optimal grid-connection capability of wind turbines (WTs). Enforcing ZVRT will improve the dynamic performance of WTs and therefore significantly enhance the resiliency of renewable-rich grids. A control scheme that includes a pitch system is an essential control aspect of WTs riding through voltage dips; however, the existing control scheme with a pitch system for LVRT cannot distinguish between a ZVRT status and a power-loss condition, and, consequently, does not meet the ZVRT requirements. A system-level control scheme with a pitch system for ZVRT that includes pitch system modeling, control logic, control circuits, and overspeed protection control (OPC) is proposed in this paper for the first time in ZVRT research. Additionally, the field data are shared, a fault analysis of an overspeed accident caused by a voltage dip that describes the operating status at the WT-collapse moment is presented, and some existing WT design flaws are revealed and corrected by the fault analysis. Finally, the pitching performance during a ZVRT, which significantly affects the ZVRT performance of the WT, is obtained from laboratory and field tests. The results validate the effectiveness of the proposed holistic control scheme. Full article
(This article belongs to the Special Issue Design, Fabrication and Performance of Wind Turbines 2020)
►▼ Show Figures

Graphical abstract

18 pages, 9758 KiB  
Article
Geometry Design Optimization of a Wind Turbine Blade Considering Effects on Aerodynamic Performance by Linearization
by Kyoungboo Yang
Energies 2020, 13(9), 2320; https://doi.org/10.3390/en13092320 - 07 May 2020
Cited by 25 | Viewed by 9547
Abstract
For a wind turbine to extract as much energy as possible from the wind, blade geometry optimization to maximize the aerodynamic performance is important. Blade design optimization includes linearizing the blade chord and twist distribution for practical manufacturing. As blade linearization changes the [...] Read more.
For a wind turbine to extract as much energy as possible from the wind, blade geometry optimization to maximize the aerodynamic performance is important. Blade design optimization includes linearizing the blade chord and twist distribution for practical manufacturing. As blade linearization changes the blade geometry, it also affects the aerodynamic performance and load characteristics of the wind turbine rotor. Therefore, it is necessary to understand the effects of the design parameters used in linearization. In this study, the effects of these parameters on the aerodynamic performance of a wind turbine blade were examined. In addition, an optimization algorithm for linearization and an objective function that applies multiple tip speed ratios to optimize the aerodynamic efficiency were developed. The analysis revealed that increasing the chord length and chord profile slope improves the aerodynamic efficiency at low wind speeds but lowers it at high wind speeds, and that the twist profile mainly affects the behaviour at low wind speeds, while its effect on the aerodynamic performance at high wind speeds is not significant. When the blade geometry was optimized by applying the linearization parameter ranges obtained from the analysis, blade geometry with improved aerodynamic efficiency at all wind speeds below the rated wind speed was derived. Full article
(This article belongs to the Special Issue Design, Fabrication and Performance of Wind Turbines 2020)
►▼ Show Figures

Graphical abstract

24 pages, 8301 KiB  
Article
Expansion of High Efficiency Region of Wind Energy Centrifugal Pump Based on Factorial Experiment Design and Computational Fluid Dynamics
by Wei Li, Leilei Ji, Weidong Shi, Ling Zhou, Hao Chang and Ramesh K. Agarwal
Energies 2020, 13(2), 483; https://doi.org/10.3390/en13020483 - 19 Jan 2020
Cited by 12 | Viewed by 2752
Abstract
The wind energy pump system is a new green energy technology. The wide high efficiency region of pump is of great significance for energy conservation of wind power pumping system. In this study, factorial experiment design (FED) and computational fluid dynamics (CFD) are [...] Read more.
The wind energy pump system is a new green energy technology. The wide high efficiency region of pump is of great significance for energy conservation of wind power pumping system. In this study, factorial experiment design (FED) and computational fluid dynamics (CFD) are employed to optimize the hydraulic design of wind energy centrifugal pump (WECP). The blade outlet width b2, blade outlet angle β2, and blade wrap angle ψ are chosen as factors of FED. The effect of the factors on the efficiency under the conditions of 0.6Qdes, 0.8Qdes, 1.0Qdes, and 1.4Qdes is systematically analyzed. The matching feature of various volute tongue angle with the optimized impeller is also investigated numerically and experimentally. After the optimization, the pump head changes smoothly during full range of flow condition and the high efficiency region is effectively improved. The weighted average efficiency of four conditions increases by 2.55%, which broadens the high efficiency region of WECP globally. Besides, the highest efficiency point moves towards the large flow conditions. The research results provide references for expanding the efficient operation region of WECP. Full article
(This article belongs to the Special Issue Design, Fabrication and Performance of Wind Turbines 2020)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-6
Back to TopTop