Results 11 to 20 of about 75,457 (257)

Design and optimization of a small horizontal axis wind turbine using BEM theory and tip loss corrections [PDF]

open access: yesE3S Web of Conferences, 2021
In this paper, an optimization approach of a small horizontal axis wind turbine based on BEM theory including De Vries and Shen et al. tip loss corrections is proposed. The optimal blade geometry was obtained by maximizing the power coefficient along the
Younoussi Somaya, Ettaouil Abdeslem
doaj   +1 more source

Experimental Study of Wind Booster Addition for Savonius Vertical Wind Turbine of Two Blades Variations Using Low Wind Speed [PDF]

open access: yesE3S Web of Conferences, 2019
The Wind turbine is a tool used in Wind Energy Conversion System (WECS). The wind turbine produces electricity by converting wind energy into kinetic energy and spinning to produce electricity.
Yohana Eflita   +4 more
doaj   +1 more source

On the ill-conditioning of the combined wind speed estimator and tip-speed ratio tracking control scheme

open access: yesJournal of Physics: Conference Series, 2022
Abstract In recent years, industrial controllers for modern wind turbines have been designed as a combined wind speed estimator and tip-speed ratio (WSE-TSR) tracking control scheme. In contrast to the conventional and widely used Kω 2 torque control strategy, the WSE-TSR scheme provides flexibility in terms of ...
Brandetti, L. (author)   +5 more
openaire   +3 more sources

Comparison of Three-Dimensional Numerical Methods for Modeling of Strut Effect on the Performance of a Vertical Axis Wind Turbine

open access: yesEnergies, 2022
This paper compares three different numerical models to evaluate their accuracy for predicting the performance of an H-rotor vertical-axis wind turbine (VAWT) considering the influence of struts.
Aya Aihara   +3 more
doaj   +1 more source

Performance Analysis and Optimization of a Vertical-Axis Wind Turbine with a High Tip-Speed Ratio

open access: yesEnergies, 2021
In this work, the aerodynamic performance and optimization of a vertical-axis wind turbine with a high tip-speed ratio are theoretically studied on the basis of the two-dimensional airfoil theory.
Liang Li   +3 more
doaj   +1 more source

Wind Turbine Power Curve Design for Optimal Power Generation in Wind Farms Considering Wake Effect

open access: yesEnergies, 2017
In modern wind farms, maximum power point tracking (MPPT) is widely implemented. Using the MPPT method, each individual wind turbine is controlled by its pitch angle and tip speed ratio to generate the maximum active power.
Jie Tian   +5 more
doaj   +1 more source

Numerical Analysis and Parameter Optimization of J-Shaped Blade on Offshore Vertical Axis Wind Turbine

open access: yesEnergies, 2021
In this study, the performance of offshore wind turbines at low tip speed ratio (TSR) is studied using computational fluid dynamics (CFD), and the performance of offshore wind turbines at low tip speed ratio (TSR) is improved by revising the blade ...
Lin Pan   +3 more
doaj   +1 more source

Effects of the vertical axis wind turbine on the velocity field of the wake flow

open access: yesNihon Kikai Gakkai ronbunshu, 2014
This paper deals with the wake flow behind a vertical axis wind turbine, focusing on the variation in the wake structure relative to the tip-speed ratio λ.
Mami WATANABE   +2 more
doaj   +1 more source

Wake Expansion and the Finite Blade Functions for Horizontal-Axis Wind Turbines

open access: yesEnergies, 2021
This paper considers the effect of wake expansion on the finite blade functions in blade element/momentum theory for horizontal-axis wind turbines. For any velocity component, the function is the ratio of the streamtube average to that at the blade ...
David Wood
doaj   +1 more source

Effects of end plates on performance of a small straight-bladed vertical axis wind turbine

open access: yesJournal of Fluid Science and Technology, 2017
The time mean characteristics and the torque variation of the straight-bladed vertical axis wind turbine attached with various end plates were examined in wind tunnel experiments, and they were associated with the effect of the wing tip shape on the ...
Seiji YAMADA   +2 more
doaj   +1 more source

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