Modelling And Simulation Of Pv-Bes Based Microgrid System Operating In Standalone Mode

Abstract

Abstract This work presents, a novel PV-Battery Energy Storage based microgrid system operating in standalone mode. The output of Solar PV changes with varying atmospheric condition. A boost converter is utilized as a DC-DC converter which extracts the maximum power coming out from the solar PV array, with the use of P&O algorithm. Battery Energy Storage System (BESS) is introduced to supply load uninterruptedly. In this project, lead acid battery is used. The energy management is done by the battery control mechanism. Battery and load are connected in parallel with the dc-dc boost converter. Based on the power generation in PV, battery gets charged and discharged. There are two cases considered in this project. In first case, both the load and battery is supplied with generated PV power. In second case, load is supplied with the help of both battery and the Solar PV. The proposed system is modeled and simulated in MATLAB. Parameters like battery current and voltage (Vbat,Ibat),load current and voltage (Vdc,Iout), SOC level of battery are observed and analyzed.