Abstract
<jats:p>In recent days utility of renewable energy sources is increased for various purposes and at varied locations under various conditions. Among all such sources wind source is one of the important sources being used extensively. The angle at which the surface of the blade contacts the wind is the pitch angle. In varying wind conditions, it is variable for optimum operation of the turbine and to prevent over speed and electrical over load in high winds. Pitch variation is allowed by gears in the hub of the rotor. It is proposed to analyse the effect of variations in pitch angles on wind turbines. The performance characteristics of the wind turbines by varying the pitch angle are implemented in MATLAB. The values of tip speed ratio of a wind turbine are estimated and coefficient of power is also evaluated. The coefficient of power is achieved at a particular tip speed ratio, pitch angle. By using Mat lab, the optimized output is obtained for interaction, the data can be plotted very easily, and graphical interactive tools can change the sizes, colours, scales etc.</jats:p>