Design and implementation of a fuzzy controller based automatic voltage regulator for a synchronous generator

Fuzzy controllers are increasingly being accepted by engineers and scientists alike as a viable alternative for classical controllers. The processes involved in fuzzy controllers closely imitate human control processes. Human responses to stimuli are not governed by transfer functions and neither are those from fuzzy controllers. This study involves the design and application of fuzzy control to the problem of automatic voltage regulation of a synchronous generator. The method explored deals with the use of binary input-output fuzzy associative memories for control. Error and rate of change of voltage are used to maintain a constant output voltage. Software routines were written in the `C´ language and were fast enough for real time computer control. The fuzzy controller was implemented in an IBM compatible personal computer to control an industrial size 5 kVA synchronous machine