Abstract
In this paper, we consider the aerodynamic characteristics of profiles used in rotors of horizontal-axis wind turbines for autonomous street lighting systems. For the analysis of the characteristics, five basic aerodynamic profiles of various types were selected: NACA 0018, CLARK-Y-15, NAVY-N-60, EXPLER 1211, GOE 217. Based on the analysis of the selected profiles, aerodynamic calculations were made, and also a calculation was made the geometrical parameters of the blades of the rotors of wind power plants with their subsequent processing and analysis obtained design data under specified conditions. These conditions were taken on the basis of detailed processing and subsequent analysis of the data obtained on the distribution of the speed of wind flow in various territories of Ukraine. Taking into account the selected power characteristics, various types of wind power plants were analyzed, after which it was decided to use horizontal axial-type wind turbines, as this type of wind power plants has the most suitable characteristics to solve the research problem. With the help of a number of mathematical transformations, dependences of lift coefficients and resistance force were established depending on the angle of attack. It was also necessary to make changes in the angles of the profile in the section of the blade in order to improve the conversion coefficient of the wind flow incident on the blades of the wind power plant. As a result, the calculated values of wind turbine diameters were obtained and analyzed for each existing profile separately, in addition, a comparative analysis of the main energy characteristics of wind energy rotors was carried out, which is clearly represented as a dependence of the power factor and moment ratio depending on the speed ratio. In the course of the analysis, aerodynamic profiles with the best weight and size and energy characteristics, capable of maximizing the use of wind flows that prevail in most of the territory of Ukraine, were identified.
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