Resumo:
This work proposes the use of sliding mode control applied in voltage regulation of
synchronous machine working as generator.
The main aspects of variable structure control (VSC) using sliding mode are presented.
The VSC strategy has received much attention in recent years because the sliding mode control
can offer many good properties, such as insensitivity to parameters variation, external
disturbance rejection, and fast dynamic response.
The VSC design is investigated using the equivalent control method and the Lyapunov
stability criterion.
In this work will be shown results of simulations and real experiments. The experimental
part of this work implements and test real controls in sliding mode using a connected
microcomputer to a data acquisition system. The goal is to accomplish control experiences (in
real-time) in voltage regulation processes for electric generators.
In the literature a lot of industrial applications using VSC were proposed. However, many
few was realized in voltage control for synchronous generators. The aim of this work is to show
the viability of the use of sliding modes in this contest, and make comparison of the results
obtained with conventional control systems.
