Design and optimization of energy supplying system for electric vehicles by mobile charge stations

Abstract

Electric vehicles (EVs) have been recommended worldwide as an alternative to internal combustion engine (ICE) vehicles. However, it will be difficult to supply enough energy to EVs using existing fixed charging stations (FCSs) and thus a mobile charging station (MCS) is proposed which has the advantage of being able to quickly and inexpensively provide charging services at any time and place. In this study, an energy supply system using MCS has been designed to verify a business model for South Korea. First, the entire country was divided into eight areas, and the population density center of each district was calculated. Second, BCS candidate sites were selected based on the population density center and EV numbers in each district. Third, by designing a business model, optimization was performed to maximize the overall profit. The result was calculated to meet the constraints such as meeting the local electricity demand and generate an annual profit of 224 million dollars. It is also predicted that this revenue could increase by 1959% by 2035 as the number of EVs increases. These results show that MCS can generate sufficient profits as a business and contribute to reduce carbon emissions.