Inductive Battery Charging System for Electric Vehicles

For pure electric vehicles can reach the expected development and have become an alternative to conventional or hybrid vehicles, it is still necessary to solve various problems. The most important are to increase the autonomy of the vehicle and make charging process as quick and clean as possible. Inductive power transfer systems (IPT) can be the solution to these problems, on the one hand, the weight and size limitations of the batteries required for adequate autonomy can be solved with sufficient load points on public roads that allow "recharge" more frequently batteries or even the possibility that these are loaded by dedicated lanes moving. This is only feasible if the loading process requires no human intervention the maneuver faster and safe for the driver. Furthermore, the ability to recharge the batteries of a contactless EV is now a reality, as evidenced by the high number of patents and published papers, however, for these systems to be part of our daily lives, we need to meet strict international standards for human exposure to electromagnetic fields and, for this, the vehicle must be properly shielded. This paper shows the experimental development of a 30 kW inductive charger with shielding system and the results obtained.