Abstract
The growing emphasis on clean and sustainable energy leads towards the integration of renewable energy sources (RESs) in the microgrid. To address the intermittency of RESs, it is essential to integrate hybrid energy storage systems, such as battery energy storage systems (BESS) and emerging hydrogen storage technology powered by fuel cells (FC), into the microgrid. This paper proposes a power management strategy (PMS) for a stand-alone DC microgrid that integrates solar photovoltaic (PV) systems as the primary source, BESS as the primary back-up, and FC as the secondary back-up. In this work, a control strategy is developed to regulate the DC link voltage of the microgrid. This paper presents a simulation study to evaluate the performance of PMS under three different scenarios comprising all possible cases. To validate the effectiveness of the proposed PMS with a control strategy, an experimental study is also carried out for a stand-alone DC microgrid comprising the hybrid energy storage. For this study, field data of residential load demand profile, solar irradiance, and ambient temperature are considered.