New Airfoils for Small Horizontal Axis Wind Turbines

New Airfoils for Small Horizontal Axis Wind Turbines

Department of Aeronautical and Astronautical Engineering. University of Illinois at Urbana-Champaign. 306 Talbot Laboratory. 104 S. Wright Street. Urbana. IL 61801-2935 In a continuing effort to enhance the performance of small wind energy systems, one root airfoil and three primary airfoils were specifically designed for small horizontal axis wind turbines. These airfoils are intended primaril...

Aerodynamic Characteristics of Asymmetric Airfoils Blade Small Vertical Axis Wind Turbines

In this paper, using sliding mesh model, the numerical simulation of small vertical axis wind turbine aerodynamic performance was studied with FLUENT software. Got change rule of four same thickness and different camber‘s NACA series asymmetrical airfoil moment coefficient of the wind turbine and wind power machine with the tip speed ratio. Wind turbine benchmark blade around the flow field was...

Development of Thick Airfoils for Wind Turbines

Discrete-time Control Stategies for Horizontal Axis Wind Turbines

This paper introduces two discrete-time controllers for horizontal axis wind turbines (HAWTs): a Linear Quadratic Gaussian (LQG) one and a model predictive (MPC) one. The LQG controller aims to strongly attenuate the disturbances influence on the system output. The control objective consists of keeping the output power constant, despite the wind variation, and thus reducing the fatigue that inv...

Determination of significant sources generating low-frequency noise in horizontal axis wind turbines

Several studies show that the Low-Frequency Noise (LFN) of wind turbines could have harmful effects on human health even when it is infrasound. In traditional classifications, the LFN of upwind turbines is referred only to steady thickness and steady loading sources, and the effect of vortices is considered negligible. In this study, the LFN of a horizontal axis wind turbine is simulated in win...