MODELING AND SIMULATiON OF STANDALONE PERMANENT MAGNET SYNCHRONOUS GENERATOR

Abstract

At present time energy crisis is a severe problem. As the population increases energy consumption also increases proportionally. We know today that conventional energy resources are limited. So the more and more emphasis is on to find out an inexhaustible energy source which promises to meet our growing energy demands. Wind energy is one of options available to us, which is clean, renewable and produces no greenhouse gases. In many countries, there are remote communities where connection with the power grid is too expensive or impractical and diesel generators are often the source of electricity. Under such circumstances, a locally placed small-scale standalone distributed generation system can supply power to the customers. Autonomous wind power systems are among the most interesting and environment friendly technological solutions for the electrification of remote consumers. This dissertation report helps to understand the basics of wind energy conversion system. Then the Standalone Wind Energy Conversion System based on Permanent Magnet Synchronous Generator is modelled and the various benefits are enlisted. Before developing the wind energy conversion system one comparative analysis has been done for the generator side converter among uncontrolled rectifier, uncontrolled rectifier followed by boost converter and switched mode rectifier. This dissertation work oriented towards investigating the performance characteristics of variable speed wind energy conversion system. As the voltage and frequency of the generator output vary along the wind speed change, a switched mode rectifier is utilised to maintain constant dc link voltage. Finally techniques on how to extract maximum power from wind have been developed. Proposed system supplies power to - the load at constant voltage and frequency. It can also use for the unbalance load because load side controller is help to compensate the effect of the unbalance operation