Design of Inductive Resonance Coupling-based Wireless Charging Infrastructure for Electric Vehicles

Abstract

Electric vehicles are an alternative to the ICE Engine vehicles to reduce air pollution. Despite this, one of the major impediments to the rapid adoption of EVs is the lack of efficient charging infrastructure on par with contemporary ICE engine refueling stations. Plug-in electric vehicles (PEVs) are the future of environmentally friendly transportation. Due to the increase in PEVs, however, there are drawbacks associated with cost and size, as well as charging cables. To address these challenges, an inductive resonance coupling-based wireless charging system has been proposed in this work. This article focuses on analyzing the electromagnetically coupled resonant wireless technique used for the charging of EVs. In this article, the efficiency of a resonant wireless charging system for EVs is studied by modeling, simulating and examining parameters such as distance, load, coil shape, and inter-turn distance influence the charging process. Charging efficiency can be significantly improved by choosing the right coil dimensions, inter-turn distance, and distance between coils. It is concluded that the efficiency of wireless power transfer increases with a decrease in distance and the same can be increased by increasing the size of the coil and there is also a limitation for the size of the coil after certain turns as the efficiency saturates. In this work, static charging mode is incorporated to eliminate the shock hazard due to wires and the ability to be installed in convenient locations such as home garages or parking lots. It also eliminates the need to constantly plug the charger into the vehicle, as once the vehicle is parked in the parking lot, the charging will automatically begin based on the state of the batteries. Thus, the wireless charging of EVs will promote the quick adoption of EVs and a pollution-free environment.