Design Of Small Scale Wind Turbine Blade For Rural Villages Electrification

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Designing small scale horizontal-axis wind turbine (HAWT) blade to achieve satisfactory levelsrnof performance starts with knowledge of the aerodynamic forces acting on the blade. In thisrnthesis Blade-element momentum theory (BEM) known as also strip theory, which is the currentrnmainstay of aerodynamic design and analysis of HAWT blade, is used for HAWT blade design.rnThe blade design program includes blade geometry parameters (chord-length and twistrndistributions) and design conditions (design tip-speed ratio, design power coefficient and rotorrndiameter) with the following inputs; power required from a turbine, number of blades,rnenvironmental wind velocity at Negele Borana and blade profile type (airfoil type).rnThis thesis, focused on the design and stress analysis of small scale wind turbine blade whichrnbuilt for the specific environmental conditions of the small rural village for Laga-Gula kebelerncommunities at Negele Borana. First the blade designed from the aspect of aerodynamic viewrnand the basic principles of the aerodynamic behaviors of HAWT studied. Second modeling andrnstress analysis of the wind turbine blade are very critically for the further design and applicationrnof wind turbine. The small-scale wind turbine blade was focused on, considering the E-Glassrnfiber reinforced plastic material. Based on the parameters of airfoil and the geometricalrnparameters of blade, the three-dimension and the assembly models of blades were establishedrnwith the SOLIDWORK modeling software. Then the models were imported into ANSYS-15rnWORKBEANCH software analysis. The displacement, Von Misses and principal stress resultsrnare determined. These results show that the positions of maximal displacement and maximumrnstresses, but it is less than the safety displacement and Ultimate tensile strength (UTS) of thernxvrnmaterial, and also it shows the environmental wind speed can produced the sufficient power forrnLaga-Gula rural kebele communities.

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Design Of Small Scale Wind Turbine Blade For Rural Villages Electrification

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