Results 71 to 80 of about 1,411 (215)

Improving the Efficiency of a Hybrid Grid System Through Nutcracker Optimization Algorithm Based TDFOPI Control

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
This paper suggests a tilt derivative fractional order proportional integral (TDFOPI) controller to enhance the performance of a power system that combines solar panels, wind energy, and batteries. The research aims to improve the dynamic performance of grid‐connected wind, PV, and battery PS by utilizing the nutcracker optimization algorithm (NOA) for
Imran Rasool   +2 more
wiley   +1 more source

Large Eddy Simulation of Vertical Axis Wind Turbine Wakes

open access: yesEnergies, 2014
In this study, large eddy simulation (LES) is combined with a turbine model to investigate the wake behind a vertical-axis wind turbine (VAWT) in a three-dimensional turbulent flow.
Sina Shamsoddin, Fernando Porté-Agel
doaj   +1 more source

Geometry optimization of small helicoid VAWT rotor

open access: yesIOP Conference Series: Materials Science and Engineering, 2018
The exploration of renewable energy sources and energy efficiency are becoming crucial for putting climate change under control. Thanks to large investments in development of technology for transformation of wind energy to useful form of energy, wind energy became one of the most sustainable energy source.
E Bešlagić, K Varda, D Petković
openaire   +1 more source

Optimizing a Novel Wind Turbine for Sub‐Saharan Africa: A Techno‐Economic and Multicriteria Evaluation

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
Wind energy has emerged as a key contributor to the global renewable energy mix, yet much of sub‐Saharan Africa (SSA) remains underutilized due to predominantly low wind speeds and the limitations of conventional horizontal‐axis wind turbines (HAWTs).
Kehinde A. Adeyeye   +3 more
wiley   +1 more source

Numerical and experimental studies of a small vertical-axis wind turbine with variable-pitch straight blades

open access: yesJournal of Fluid Science and Technology, 2015
This paper presents a numerical simulation and experiment on the effect of the variable pitch angle on the performance of a small vertical-axis wind turbine (VAWT) with straight blades.
Rachmat FIRDAUS   +3 more
doaj   +1 more source

Comparative Analysis Among Different Performance Improvement Techniques for Wind Turbines in Terms of Energy and Economy for Small, Medium, and Large‐Scale Applications

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
With a view to finding the best approach to maximize the wind energy harvesting from wind turbines, this research has focused towards assessing the effects of different innovative modifications to wind turbines at different wind speed conditions and comparing them in terms of aerodynamic performance, economy, and environmental impact.
Mim Mashrur Ahmed   +4 more
wiley   +1 more source

Energy recovery of moving vehicles' wakes in highways by vertical axis wind turbines [PDF]

open access: yesFME Transactions, 2020
In this study, energy recovery from moving vehicles wake by vertical axis wind turbine (VAWT) was investigated. The wind turbine is designed to be located at the highways medians to generate electricity. Transient simulation was performed to evaluate the
Ismaeel Tareq A.   +3 more
doaj  

Effects of turbulence models and grid densities on computational accuracy of flows over a vertical axis wind turbine

open access: yesInternational Journal of Renewable Energy Development, 2018
Flows through a vertical axis wind turbine (VAWT) are very complex due to their inherent unsteadiness caused by large variations of the angle of attacks as the turbine is rotating and changing its azimuth angles simultaneously.
Jaruwan Chaiyanupong, Tawit Chitsomboon
doaj   +1 more source

Two-stage optimization of three and four straight-bladed vertical axis wind turbines (SB-VAWT) based on Taguchi approach

open access: gold, 2021
Wei‐Hsin Chen   +6 more
openalex   +1 more source

Design and Fabrication of H Darrieous VAWT

open access: yes, 2019
In this thesis, design calculation and fabrication of H Darrieus VAWT are carried out. The purpose of this thesis is to produce power of electricity. H Darrieus wind turbine is a type of vertical axis wind turbine. This wind turbine consists of three straight blades, technically an airfoil which is connected to the radial arm and rotating main shaft ...
Hnin Yu Yu Kyaw   +2 more
openaire   +1 more source

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