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‘Design of wind blades for the development of low-power wind turbines using Betz and Schmitz methods.’

ABSTRACT This paper deals with wind turbine design and production for low power generation, and is tailored for residential usage constraints. The design process involves choosing the type of material for wind turbine and deciding the distribution of the blade aerofoil, pitch angle, and chord length along the radius. The distributions of the pitch angle and chord length are calculated based on the conservation of angular momentum and the theory of aerodynamic forces on an aerofoil. Blade Element Momentum theory is first developed, and then used to perform a parametric analysis to decide if the optimised blade pitch and chord length values establish the most effective blade geometry. Finally, two separate approaches are evaluated to decide which one produces the most effective blade of wind turbines and also provides a discussion of the most critical parameters in the design of the blade of wind turbines to optimise effectiveness. The performance of wind turbine can be improved using this theory in designing of wind turbine blades.