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M.Tech / M.E / PhD Thesis | Electrical Engineering | India | Volume 4 Issue 7, July 2015

Analysis on the Performance Characteristics of the Wind Turbine Gear Box at Different Pitch Angles

Arekallu Nagamani | R. Ganapathi | A.Nagaraju

Abstract: 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 analyze the effect of variations in pitch angles on wind turbine gearbox. The performance characteristics of the wind turbine gearbox by varying the pitch angle are implemented in MATLAB. The planetary gear box is used at pitch angle of 6 degrees which can produce 2.1MW/ blades power. 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. Gear ratio is estimated. 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, colors, scales etc.

Keywords: wind turbines, planetary gearbox, and induction generator, pitch angles, tip speed ratio, coefficient of power, gear ratio

Edition: Volume 4 Issue 7, July 2015,

Pages: 759 - 763