An Overview of Electric Vehicles Charging and its Impacts on Electricity Grid

Electric vehicles (EVs) are considered one of the main applications of green transportation. They solve pollution problems in addition to achieving a healthy and clean environment. Charging EVs from renewable energy sources (RES) helps the world to reduce carbon emissions and climate change. Also, it will decrease petrol products usage. It is very important to find alternative sources for fossil fuels because of being harmful to the environment, increasing their prices and it will run out. Many papers have reviewed separate points related to EVs but there is no paper that reviewed the topic completely. This paper considers a good reference including many aspects of EVs. Modern technologies such as a vehicle to everything (V2X) and vehicle for grid (V4G) are discussed briefly in this paper. By V2X EVs will be movable energy storage systems for the electricity grid which connects two important sectors. These two sectors are transportation and energy. Charging and discharging of EVs has many impacts on the electricity grid. Part of these impacts are considered as advantages for the electricity grid and the other part are considered as disadvantages for it so that this paper reviews effects of EVs charging and discharging on the electricity grid. Also, this paper focuses on renewable energy (RE) integration with EVs charging stations.