Performance Improvement of Self Excited Induction Generator for Renewable Energy System

Abstract

During the last recent years, a large number of research projects focused on the use and development of new systems utilization alternative sources of energy. The work covered the development of sources and increase in their productivity, reliability, efficiency and economy. The research project presented aims at improving the performance of self excited induction generators (S.E.I.G.). This type of generators has been known for a long time but it limited in its application, although it offers advantages in other aspects. The research focuses on improving the performance characteristics of S.E.I.G by introducing control on its exciting capacitors when the three phase induction generator is used to supply single phase load, i.e at an unbalanced operation. Obtained results showed substantial improvement in voltage regulation and stability by introducing a feed back control loop with excitation current using SCR devices. Laboratory investigation were also performed to show the practicality of the solution performed to show the validity of the proposed techniques. The research outlines the main characteristics of self excitation, and the theory behind it. It also surveys recent researches topics relevant to that subject. A brief description of the theory of self excitation is given with a complete evaluation for the performance obtained and its limitations.