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Numerical analysis of the spatial distribution of equivalent wind speeds in large-scale wind turbines
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Numerical analysis of the spatial distribution of equivalent wind speeds in large-scale wind turbines
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Numerical analysis of the spatial distribution of equivalent wind speeds in large-scale wind turbines
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Journal Article
Numerical analysis of the spatial distribution of equivalent wind speeds in large-scale wind turbines
2017
Overview
The effects of wind shear and the tower shadow contribute to periodic fluctuations in the wind speed and aerodynamic torque, which cause several problems. This study develops an equivalent wind speed model for large-scale,
n
-bladed wind turbines that includes the wind shear and the tower shadow effects. The comprehensive model is used to derive the disturbance components of wind speed caused by wind shear, the tower shadow, their synthesis, and the equivalent wind speed and to delineate their spatial distributions in the rotor disk area. Simulation results reveal that the effects of wind shear, the tower shadow, and the equivalent wind speed on the disturbance components fluctuate periodically and are closely related to the wind turbine correlation parameters, such as the rotor radius, hub center height, tower radius, distance from the tower midline to the blade, wind shear exponent, and blade number.
