Open AccessJournal Article
The analysis of the pitch control of wind turbine by the influences of wind shear and tower shadow
TLDR
In this article, the effect of pitch control for the improvement of the wind turbine starting/braking performance and stabilizing the output power is continuously showed with increasing wind turbine power.Abstract:
With the power of a single wind turbine increasing,the effect of the pitch control for the improvement of the wind turbine starting/braking performance and stabilizing the output power are continuously showedIt also causes the higher wind tower and the longer diameter of the wind wheelThe difference of the wind speed distribution is biggerThis paper build the model of wind based on wind shear and tower shadow and the model of the wind wheel based on blade element theoryIt proves the pulsation of the output power,the torque,the speed and also the pitch angle caused by wind shear and tower shadowThe pulsation also causes the unbalanced load on the blade which reduced the life of the bladeSo the individual pitch control is necessary for the large wind turbines to reduce above-mentioned problemsread more
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Journal ArticleDOI
Power fluctuation and power loss of wind turbines due to wind shear and tower shadow
TL;DR: In this paper, the effects of wind shear and tower shadow on power output in terms of power fluctuation and power loss to estimate the capacity and quality of the power generated by a wind turbine were investigated.
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Simulation-based micro-site selection for wind farm in complex terrain
TL;DR: In this article, the CFD software is used, with the finite volume method, to stimulate the complex terrain where the wind turbine installed, and it was found that the downstream wind generated a huge impact on the shear coefficient of the top and bottom of the turbine blades.
Proceedings ArticleDOI
Individual Blade Pitch Control for Floating Wind Turbines Bearing the Coupling of Aerodynamic - Hydrodynamic – Mooring Loads
TL;DR: Aiming at the problems of low search efficiency and poor quality of traditional Ant Colony Algorithm, the ACA-PID individual blade pitch controller for floating wind turbine is improved by using the best-worst ant system.
Journal ArticleDOI
Power Output Test of 5kW Umbrella Wind Turbine
TL;DR: In this paper, the authors introduced the composition and working principle of umbrella adjusting mechanism, analyzed the tower shadow effect of leeward wind turbine in the theory, and carried out the steady state wind experiment of the umbrella using wind tunnel.
Proceedings ArticleDOI
Individual blade pitch control for floating wind turbine based on RBF-SMC
TL;DR: The results show that the individual blade pitch control based on RBF-SMC can effectively reduce the sway of floating foundation, restrain the fluctuation of effective wind speed of wind turbine, and ensure the stability of output power.