Application of Super Capacitor Energy Storage in Fast Charging Station of Electric Vehicles

Abstract

As the replacement of traditional gasoline vehicle, electric vehicles play an important role in the reduction of fossil energy consumption and greenhouse gas emission. With the wide spread of electric vehicles, more fast charging stations will be built. The impact of fast charging stations on distribution network should be considered. The main purpose of this paper is to investigate the application of super capacitor energy storage (SCES) in fast charging station (FCS). Firstly, the impacts of FCS on power grids are analyzed. Then a controller is designed to generate real-time power demand to SCES. Finally, the simulation model of FCS and SCES is established to analyze the effect of SCES on reducing influences of FCS. The simulation results show that power change rate of FCS can be limited by compensation of SCES based on the quick response of this energy storage system.