Fractional Order Robust PID Controller Design for Voltage Control of Islanded Microgrid

Abstract

This paper emblems the application of fractional order PID (FOPID) controller into a single phase islanded microgrid having a single power source to control the fluctuations in its output voltage. The proffered controller has adaptability in devise as the controller provides more parameters than integer Order PID controller (IOPID)to tune it. The proffered controller is devised using Nelder-Mead optimization technique. Use of the optimization technique gives increased performance of the system. The controller is applied into the system under uncertainties and different load settings. After assessment of performance, it is observed that the application of the proffered controller can cut down the voltage fluctuations of the system and afford fast response with robust performance.