Solar Powered EV Fast Charging Station to Support Distribution Grid

Abstract

The demand for charging stations is increasing with the advancement of electric vehicles. The required power in the charging station is very high. The power demand is even higher in a fast-charging station. The sudden high-power demand causes voltage instability, power loss, harmonic distortion and transformer overloading on the distribution grid. Hence, the work proposed in this paper focuses on, firstly to investigate the fast-charging impact on the grid. Secondly, to provide a solution by integrating renewable energy sources (such as solar PV) along with a battery in dc bus to reduce this effect. The proposed system also facilitates bi-directional power flow from grid to vehicle and vehicle to grid. The control method of various modes of a fast-charging station with and without the presence of a solar PV are presented. The analysis, simulation and preliminary hardware results of the proposed system are included in the paper.