Hybridization of Energy Storage Systems for Grid Support by Means of Bidirectional Power Electronic Converter

Abstract

This thesis deals with the simulation and real-time emulation in a laboratory setup of a Hybrid Energy Storage System connected to microgirds. The association of two batteries; i.g., Vanadium Redox Flow Battery and Lithium Ion battery permits to take advantage of the characteristics of both Energy Storage Systems obtaining a high energy density, high power density. A general model of Vanadium Redox Flow Battery is developed. A Vanadium Redox Flow battery and Lithium-Ion battery are connected to DC bus and controllable loads through two bidirectional boost converter. The model of the Vanadium Redox Flow battery is implemented in MATLAB/SIMULINK. The real-time experimental emulation of the Energy Storage System models and Hybrid Energy Storage System have been validated against PC simulations showing full consistency. The setup of the hardware can be used to test any technologies of batteries.