Multi-objective Control of Multi-Operational Grid-Integrated Inverter for PV Integration and Power Quality Service

Abstract

Abstract This Article Presents a Versatile Multi Objective Control Approach to Control Photovoltaic (PV) Powered Micro-grid side Multipurpose Grid Integrated inverter (µ 1 G-MPGII). This envisaged system uses SRF Theory to establish Modified Multi-objective Flexible Synchronous reference frame (MMOFSRF) based control strategy to control µG-MPGII. This µG-MPGII can be employed to 1) Establish complete control on grid real power based on State of charge of battery (SOC) & load profile, 2) Works as distributed power quality enhancer with features of eliminating dominant harmonics produced by nonlinear loads at point of common coupling (PCC), injecting required reactive power for the load and improving power factor 3) Balance the utility grid currents under unbalanced load system. The transfer function model of proposed system is derived and analyzed for stability assessment through frequency response characteristics. The efficacy, dynamic Pursuance and multifunctional features of proposed system are verified by conducting comprehensive simulation studies in MATLAB/SIMULINK.