Power Quality Analysis of an Electric Vehicle Charging Station

Electric Vehicles are gaining a lot of impetus due to their advantages over conventional vehicles. With the rise in demand for Electric Vehicles, there is also a rise in the demand for better and faster charging stations to provide seamless, easy and quick charging. The purpose of this paper is to talk about the electric vehicle charging stations and to briefly describe their operation. The paper also focuses on the various power quality issues and abnormalities developing in the grid, which may impact the operation of EV chargers, with a detailed discussion about Voltage Sags. The various causes of Voltage Sag are discussed, their effects on various converters are mentioned and the ways of overcoming Voltage Sags are derived. DVR, as a Voltage compensator, is used to overcome voltage sag. The graphs help to explain in better, the use of such devices for overcoming the issues.