PMP Based Optimal Power Management of a PV-Fuel-Cell-Battery Hybrid Power Source

We propose an optimal power management for a standalone microgrid composed of a Photovoltaic array (PV), a Fuel-Cell system (FC) and an electrochemical battery based on the Pontryagin’s Maximum Principle (PMP). The three sources are interfaced in parallel to a common DC-link via DC/DC converters and are designed to meet the load demand especially in areas outside the electricity coverage. The objective of the proposed strategy is to reduce the fuel consumption by making the system operate in its optimal operating point with respect to load demand and weather conditions. Some simulation results are presented to confirm the optimality of the proposed strategy.