Design and Implementation of an automatic voltage regulator of an engine generator set using microcontroller

Abstract

AC generators commonly use a combination Exciter-Voltage Regulation system to maintain generator field current under varying electrical loads. The basic voltage regulation system is designed to automatically regulate generator output terminal voltage within close tolerances of a specified value. The generic regulation system is a 'closed loop' feedback system in which generator output voltage is automatically compared to a reference voltage. The error signal is used to change generator excitation. The objective of this project to design and implement an Automatic Voltage Regulator for an engine generator set using Microcontroller. the output voltage of the generator will be transformed, rectified and filtered in order to be measured by the Arduino controller, which controls the excitation voltage through a high frequency switching device using PID controller program implemented inside the Arduino.