On Optimization of Power Coefficient of HAWT


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.

Share and Cite:

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.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Perli, S.B. (1938) Windpump and Windelectrical Units. ONTI, Kharkov. (in Russian)
[2] Sabinin, G.H. (1931) Theory and Aerodynamic Calculation of Wind Engines. Trudi TsAGI, Moscow. (in Russian)
[3] Hansen, M.O.L. (2000) Aerodynamics of Wind Turbines. James and James, London.
[4] Okulov, V.L. and Sorensen, G.N. (2008) Ideal Wind Turbine with Finite Number of Blades. DAN, 420, 478-483. (in Russian)
[5] Tenguria, N., Mittal, N.D. and Ahmed, S. (2011) Evaluation of Performance of Horizontal Axis Wind Turbine Blades Based on Optimal Rotor Theory. Journal of Urban and Environmental Engineering, 5, 15-23. http://dx.doi.org/10.4090/juee.2011.v5n1.015023
[6] Kashafutdinov, S.T. and Lushin, V.N. (1994) Atlas of Aerodynamic Characteristics of Wing Airfoils. SO RASHN, Novosibirsk. (in Russian)
[7] Dosaev, M.Z., Kobrin, A.I., Lokshin, B.Ya., Samsonov, V.A. and Selyutskiy, Yu.D. (2007) Constructive Theory of Small-Scale Power Generators. Part I, MSU Publishing, Moscow.

Copyright © 2023 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.