Performance Comparison of Proportional-Integral and Fuzzy-PI for a Droop Control of DC Microgrid

This work presents the droop control performance for sharing loads on the DC microgrid network. The traditional droop control consists of voltage control and current control where the PI controller is used as compensation for the error. The droop control performance can be seen from the fast response of the system when load power sharing between two DC generating sources is enabled. The Fuzzy-PI controller as an intelligent control functions to improve the performance of droop control on the DC microgrid. The Fuzzy PI controller suggested is built with the aid of a closed loop control based on the power of each unit DCG (DC Generator), and accurate power distribution has been realized proportionally to the power ratings of each DCG taking into account load changes. The use of Fuzzy-PI in droop control makes the dynamic reaction quicker (0. 06s rise time) and microgrid system stability better compared with PI controllers. The proposed control strategy is completely tested with a Mathlab/Simulink simulation.