Vehicle to grid (V2G) and grid to vehicle (G2V) energy management system

Abstract

Electric Vehicle (EV) batteries are potential energy storage devices in microgrids. It can help to manage microgrid energy consumption by storing energy when there is a surplus (Grid-To-Vehicle, G2V) and returning energy to the grid (Vehicle-To-Grid, V2G) when there is a demand. This methodology can be expressed by developing infrastructure and management systems to implement this concept. This paper presents an architecture for implementing a V2G-G2V system in a microgrid using Layer 3 fast charging for electric vehicles. A microgrid test system is simulated that has a Direct Current (DC) fast charging station to interface electric vehicles. Simulation studies are performed to illustrate V2GG2V power transmission. The test results show the regulation of active power in the microgrid by electric vehicle batteries in G2V-V2G operating modes. The design of the charging station ensures minimal harmonic distortion of the current supplied to the network, and the controller provides good dynamic performance in terms of voltage stability on the DC bus.