ABSTRACT
In the present scenario, the energy storage demand with grid integrated system is increasing to get continuous and uninterrupted power supply. It is also important for utilization of renewable storage efficiently as the output power is not always constant and also it is not controllable. Thus, for better energy storage management, an energy storage system with bidirectional converter (BDC) is essential. In this chapter, a SEPIC/Zeta converter is proposed because in comparison to other converters, SEPIC and Zeta converters has reduced ripple in output voltage. This converter has two modes of operation i.e., In SEPIC mode, the battery supplies power to the DC grid by stepping of the voltage and in Zeta mode, the battery will charge by stepping down the voltage. However, these modes would be selected by energy management system. But in the proposed chapter, the SEPIC mode and Zeta mode can be realized individually. The characteristics of each topology is observed by State Space Analysis (SSA), Root-Locus (RL) plot and step response analysis with wide load variation.
