Diseño y construcción de un regulador automático de voltaje para el generador sincrónico de 8,58 kVA del laboratorio de Sistemas Eléctricos de Potencia

Abstract

The current project has the main goal of the design, construction and implementation of an automatic voltage regulator AVR which is described as an electronical mechanism that regulates the synchronous machine´s excitation current to keep the stator´s voltage the same as the desired reference voltage. The regulator consists of two main stages such as: the control stage which adjusts the excitation current and voltage, besides, it implements the regulator limiters; and the power stage, which is in charge of the voltage rectification that feeds the rotor winding. The control stage has a proportional integral PI loop implemented in Arduino Mega 2560´s microcontroller and is in charge of the regulator´s stability, while the regulator´s limiters provide means of restricting the excitation system output in real time. The excitation system is a self-excited static type whose energy source comes from the main generator. Finally, the control system and limiters are subjected to different tests so that their performance with different reference steps and load variations with the load installed in the Physical Electrical Power System Laboratory can be verified.