A fuzzy controller of an induction generator working on a passive network

In the field of electrical generation there are few applications of induction machines and one of the reasons is because it is very difficult to control the power quality parameters in stand-alone mode operations. The aim of the following paper is to introduce a generation system using an asynchronous machine, working in island mode, and to propose an innovative control strategy in order to reach an optimum performance on voltage and frequency in every load condition. In the state of art the induction generator is controlled acting separately on the mechanical torque and on the reactive power. In this paper, it is shown that those two parameters are correlated and they have to be controlled together. This task can be implemented with the aid of a fuzzy controller that is a very powerful technique in this kind of application