Development of Horizontal Axis Four Blade Micro Wind Turbine

Abstract

Renewable energy is a must to fulfill the need for electricity in the future, wind is a solution but has certain difficulties while extracting energy. The designed wind turbine will generate electricity at rated wind speed. The wind speed is not constant in all regions because the wind turbine is not able to generate the required power. Modern wind turbine generally consists of 3 blades which have moderate efficiency, and less solidity and, require more cut-in speed. In order to reduce cut-in speed, the solidity of the rotor has to be increased. It can be increased by adding a number of blades, this ultimately reduces the cut in speed which enhances the generation of electricity at low wind speed. This paper presents the design and analysis of 4 blades micro wind turbine and illustrates parameters like chord length, twist angle, and axial induction factor which affect cut-in speed.