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The horizontal axis wind turbine HAWT blades rotation in the steady wind flow is considered. We discuss the problem of determining the blade twist which could guarantee the maximum value of the power coefficient. We define the blade twist as the technological turn of sections of blade around its axis. This turn changes the effective pitch angle of turbine blade along its length. For description of aerodynamic load upon the blades we used the quasi-steady approach. Air velocities of centers of pressure of blade sections are represented when taking into account components induced by flow and vortex. We reduced the functional maximization problem to find the maximum of non-dimensional function. This function is given by Riemann integral depending on section pitch angle and tip speed ratio. We suggested the algorithm for solving the problem under consideration for a given blade shape.

KEYWORDS

HAWT Blade; Tip Speed Ratio; Maximum of Power Coefficient

Cite this paper

Dosaev, M. , Klimina, L. , Lokshin, B. , Selyutskiy, Y. and Hwang, S. 2014 On Optimization of Power Coefficient of HAWT. Journal of Power and Energy Engineering, 2, 198-202. doi: 10.4236-jpee.2014.24028.





Autor: Marat Z. Dosaev1*, Lyubov A. Klimina1, Boris Ya. Lokshin1, Yury D. Selyutskiy1, Shih-Shin Hwang2

Fuente: http://www.scirp.org/



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