Modelling and Control of a Three Phase PVGT System

Abstract

PV Grid Tied (PVGT) systems are extensively encouraged due to the increased demand on the existing grids. To supply this demand, erecting new PVGT systems requires the modelling and controlling of system components are necessary. The PVGT system mainly comprises of a Solar PV (SPV) power plant with PV arrays, charge controller consists of an inbuilt MPPT algorithm, DC-DC converter, DC-AC converter, filter components, three phase transformer, loads and utility grid. This article presents the mathematical modelling and control methods used for installing a 100 kW PVGT system. The 100 kW PVGT system is designed and developed on Matlab/Simulink software and the results were presented for different irradiance and temperature variations and the power quality assessment is done by using the THD analysis.