철도전력망을 이용한 EV DC 충전설비 배터리 잔존용량에 따른 충전효율 가변성 연구

A Study on Charging Efficiency Variability by Utilizing Remaining Capacity of EV DC Charging Facility Batteries of Railway Electric Power Grids

Recently, while interests on supply of electric vehicles have increased there still are insufficient charging facilities. As a solution to this matter, using electric power grids that constantly retain about 30~50[%] residual power is being considered. Therefore proposed in this paper railway, is a method to establish a charging infrastructure to utilize railway DC power grids. In addition we designed a high-speed DC charging system, and simulated improvements of the charging structure's charging efficiency according to remaining capacity of batteries.