Energy management for renewable electricity production system including hybrid hydrogen sub-system

An optimal energy management technique for hybrid power generation with a hydrogen storage system is presented in this study; based on a fuzzy controller (FC) and local controls for each converter. The system includes mainly a photovoltaic generator (PVG), a fuel cell, a hydrogen storage tank, an electrolyzer, batteries, and electrical converters. Energy management aims to manage the excess energy produced by the PVG to meet load demand taking into consideration the system's cost and lifespan. The MATLAB-Simulink environment is used to simulate the proposed energy management technique; the obtained results show considerable limitation in current/voltage constraints, which prolongs the hydrogen subsystem's lifespan and reduces the system's cost.