An experimental analysis on the performance of a vertical axis wind turbine

Abstract

Wind energy is the most available form of renewable energy among all the energy sources. Wind energy can be extracted by a wind turbine and can be converted into electrical energy using proper electricity generating apparatus. This paper is focused on a technique that can be used effectively for the purpose of converting the kinetic energy of wind into electrical energy. This process is completely friendly to environment and the cost associated with the fabrication is very little. In this research a vertical axis wind turbine has been designed and fabricated to perform the job of extracting energy from wind. The turbine is of Darrieus type with three twisted blades. For the conversion of mechanical energy from the turbine into electric current and alternator also fabricated and coupled with the turbine. This paper describes the whole procedure to build up a simple wind power system with vertical axis wind turbine and shows performance of such power system under various wind speed. The specialty of this system is its extremely simple arrangement and absence of any motion transmission. With the recent surge in fossil fuels prices, demands for cleaner energy sources, and government funding incentives, wind turbines have become a viable technology for power generation. Currently, horizontal axis wind turbines (HAWT) dominate the wind energy market due to their large size and high-power generation characteristics. However, vertical axis wind turbines (VAWT) are capable of producing a lot of power, and offer many advantages over (HAWT). The main objective of this project is to design and build a self-starting vertical axis wind turbine to operate in low wind speed condition. This article presents a vertical axis wind turbine that used residential as a powering source. A VAWT produce electric power from air flow on the blade with shaft rotation. The shaft and generator motor are connected with the pulley to rubber belt. When the shaft starts to rotate, the generator motor and the belt start to rotate. In this case the VAWT used the generator motor to produce electricity. This device consists of a shaft, generator motor, baring, v-belt and other storage battery, rectifier, LED. Height and width of the VAWT 73 cm and 33cm. Also, the blade sheet square 30.48 cm and blew the blade stand length. We are used in this project 50w & 220v ac generator motor. Generator are connected with half wave rectifier to battery. So, if the turbine turned off, the battery will help to back up the power