Nikola Mirković

A way to promote and accelerate the adoption of electric vehicles (EVs) among the general public is by highlighting the amenities they offer. Wireless power transfer is an attractive concept that, when applied to EV charging, enables a seamless charging process while reducing the required battery size, maintenance costs, and equipment wear. However, wireless charging technology is complex, and several challenges hinder its widespread adoption. This presentation aims to provide an overview of wireless charging technology for EVs, discussing key challenges such as inductive link compensation, converter topologies, control strategies, bidirectional power flow, and converter synchronization. Conventional solutions will be briefly analyzed, with the main focus on state-of-the-art approaches, particularly in the areas of highly efficient and robust inductive link compensation, single-stage chargers, and compact three-phase chargers designed for high power transfer densities. Implementation guidelines, prototypes, and experimental data will be presented, covering various prototypes and a wide range of power levels, from 3.3 kW to 40 kW, with efficiencies reaching up to 96.8%.

Keywords: electric vehicles, wireless charging