Modeling of Electric Grid Behaviors having Electric Vehicle charging stations with G2V and V2G Possibilities

The use of green energy has triggered researchers' attention; hence its utilization in transportation and the invention of electric vehicles(EV). They can both be load and storage system to the grid. Therefore, the integration of EVs to the grid has a capital role in grid energy management. This work proposes the grid with EV charging stations which can allow simultaneous multiple charging and bi-directionality. The charging of the vehicles from the grid (Grid-to-Vehicle (G2V)) and the vehicle sending power back to the grid (Vehicle-to-Grid (V2G)) are shown in this work. The behavior of the grid, responding to random charging and discharging of the vehicles, is illustrated. The bi-directional AC-DC converter together with DC-DC off-board charger and the related controls are shown in this work. The complete topology is simulated in Matlab-Simulink and the results are presented in this work.