Performance comparison between a single-phase bidirectional converter connected to the grid using PI and fuzzy controllers

Abstract

This paper compares the control of a bidirectional converter connected to the grid using two different controllers: the conventional PI controller and a fuzzy controller. The approach is done by detailing the design of the fuzzy controller, indicating the inputs and outputs, pertinence functions, and inference rules. The performance of the controllers is evaluated based on simulations using Simulink/Matlab, so that the output current of the drive follows a given reference. This reference goes through changes, thus the transient behavior for each case can be studied. In the conclusion of this paper a quantitative and comparative comparison is done, in which the observed advantages of each controller analyzed are highlighted.