Comparative Review of Hybrid Energy Storage Devices

In recent years, the growth of the renewable energy and Electric vehicle demand have accelerated the progress of energy storage system in these fields. Energy Storage system (ESS) is an essential element for increase efficiency, reliability and environmental sustainability of power systems. The excess energy that is produced during low demand is captured and stored by Storage Systems and is released during high demand, balancing the supply and demand. ESS reduces the necessity for new power-plant construction by storing reserve energy (stored during excess – low load – periods, releases during high load periods), which saves infrastructure cost. Hybrid Energy Storage System (HESS) has developed and attracted growing attention in recent years as a new concept for sustainable energy storage, due to the combination of multiple energy storage devices to enhance their efficiency and performance. HESS has several merits such as high energy density, high power density, long life span, long cycle life, reliability and high-power discharge. HESS effectively controls energy loss through energy management strategy and stabilizes power supply. In this paper, we comprehensively review and analyze the hybrid model among various ESSs, and we only consider the hybrid model of battery and supercapacitor, and battery and SMES. Finally, the paper concludes by pointing out the future trends and research direction in the area of Hybrid energy storage systems.