A NOVEL HYBRID PV/FC ENERGY MANAGEMENT SCHEME FOR GRID-CONNECTION AND ISLANDED OPERATION CAPABILITIES

摘要

The generation of electrical energy by PV & Fuel cell systems have been progressively more used in because of the cost of energy produced from fossil fuels is growing day by day and RES becomes a capable other source for fossil fuels applications to grid connected systems/standalone systems. This paper presents the analysis, design, and simulation results of a fuel cell/photovoltaic energy management system with backup. The proposed system can handle the both islanded and grid-connected operations. The main benefit of the introduced system is that, the inverter works as a current source in phase with the grid voltage, supplying power to the grid and balancing the dc-link voltage in grid-connected mode. In islanded mode, the inverter control is reconfigured to acts as a voltage source using droop methods. The dc/dc converter controls the dc-link voltage to enable the MPPT reference to be followed. An operation procedure is introduced to make sure the quality of the energy supply and diminish energy loss. For islanded operation mode battery bank is connected to dc link which acts like a energy storage. The proposed system will enable increased connections of renewable energy sources in the grid. The proposed concept is verified by using MATLAB/SIMULINK software and the corresponding results are presented.