Site Investigation for Wind Potential Assessment and Development of Permanent Magnet Generator for Roof Top Application

Presently alternate energy resources are replacing conventional energy sources to produce electric power to minimize the usage of non-renewable energy sources. Wind power is one of the potential alternate energy resources and is being exploited and deployed actively. The wind energy system is basically composed of two core components one is wind turbine and another is electrical generator. The wind potential is not same at the entire region, Hence it important to do assessment on the sites for better power output. In the present project investigation on four different locations has been assessed based on annual probability density function. The probability density function at each site has been determined using Weibull, Rayleigh and graphical method distribution function. The shape parameter(k) and scale parameter(c) values were found for selected locations. Based on the energy production of each wind turbine at each location, the suitable wind turbine was recommended. The second part of this project deals with development of small scale permanent magnet generator. For the construction of permanent magnet generator indigenous materials are used, due to which the cost of module is reduced Study on the performance characteristic of the permanent magnet generator was made through a small motor coupled with permanent magnet generator in absence of wind turbine. The observation on variation of efficiency at load and no load condition was made though experimentally. The torque produce and its variation with rotational speed were determined. Permanent magnet generator was tested to check its efficiency and power output at load and no load condition. Radial flux permanent magnet generator has been developed subject to satisfying the features of low operating shaft speed, higher power density, cost effectiveness and compact size.