Energy Management System in Micro-Grid with Storage and Hydrogen Production

This work proposes an Energy Management System (EMS) for a Micro-grid composed of a Photovoltaic system (PVs) with Maximum Power Point Tracking (MPPT), a Proton Exchange Membrane Fuel Cell (PEMFC), an electrolyzer and a storage system composed of batteries and hydrogen tanks. When PV production is lower than load demand, the lack of power demand is provided by the fuel cell with low dynamics and batteries with high dynamics. There current references are calculated using a constrained Explicit Model Predictive Control (EMPC) taking into account the dynamic of each element. When PV production is higher than load demand, the fuel cell is idle and its current reference is zero. According to the State of Charge (SoC) of the batteries, the storage elements charging current reference is balanced between them. The EMS performance is evaluated by simulation results.