Design, Development, Manufacturing and Testing of Aerofoil Blades for Small Wind Mill

Year 2012, Volume: 2 Issue: 4, 640 - 644, 01.12.2012

Mahesh Wagh M. M. Wagh Nilkanth N. Shinde

Abstract

In India the average per capita electricity consumption for domestic utilities is from 1-1.5kWhrs, which means a small wind mill of 1 kWp is reasonably sufficient to cope up with every day need of a family. This paper has dealt with design, manufacturing and performance testing of aerodynamic rotor blade for 1kWp small wind machine. It is observed that the small wind mills available in this range are not indigenous and are designed for higher rated wind speeds. A new design methodology was established for indigenous development of small wind machine technology, which considers aerodynamic rotor blade design for rotor blade performance and finite element design practices for strength of rotor blades. This has facilitated to consider the cut in speed from 2m/s onwards, rated speed 11-14m/s and cut out speed of 25m/s. The FRP/ERP rotor blades having light weight and highest strength to weight ratio was selected and has fulfilled the conditions of low initial torque for lower cut in speeds. The power curves obtained by testing wind machines by IEC 61400-121 methods shows improved performance over market similar capacity wind machines.

Keywords

Small wind mill design, Aerofoil section for wind mill, testing of small wind mill, performance of small wind mill, rotor blade design of small wind mill

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