Optimised V-F Controller for PV-Based Microgrid

Abstract

This paper focuses on designing an optimal controller for the microgrid which is based on PV based microgrid along with battery. PQ control mode is normally employed in grid connected mode but in islanded mode V-f control is highly desired to maintain V and f constant. Occurrence of transient disturbances is needed to be controlled by controlling parameters which are sensitive. For controlling both the powers of the system the P-I controller is used. As the nature of the system becomes highly complex and nonlinear it becomes difficult for optimally tuning up the PI gains. Evolutionary algorithm is one of the methods of optimization for solving the optimal problems. In the proposed work analysis of controlling active and reactive power is performed by fire fly algorithm and is utilized for tuning of P-I controllers gains. The efficacy of the tuned controller is verified under islanding conditions with different loading conditions. The study of simulations is done in MATLAB and Simulink environment.