Grid and Islanded Operations of PV EnergyManagement System by Means ofReconfiguration of Controllers

Abstract

In this idea the investigation, configuration of a photovoltaic energy management system with battery reinforcement displayed. The proposed system is work in both grid connected and autonomous load operations. Main advantage of the proposed system is that, the inverter functions as a current source in phase with the grid voltage, infusing energy to the network and controlling the dc-link voltage in grid-connected mode. The converter manages the battery charge and discharge. In islanded mode, the inverter control is reconnect to work as a voltage source using droop schemes. The dc/dc converter manage the dc-link voltage to empower the MPPT. An operation convention is proposed to guarantee the quality of the energy supply and minimize the losses of energy. A battery bank is joined with the dc interface as stores the energy for islanded operation mode. The point of this paper is to demonstrate that the proposed framework performs accurately, without risky homeless people for the inverter or the loads. Recreation and trial results on a 3-kW model demonstrate the possibility of the proposed control system.