Bidirectional Wireless Power Transfer System with Wireless Control for Electrical Vehicle
Résumé
This paper presents a Bidirectional Wireless
Power Transfer (BWPT) system, for medium speed charging
Electrical Vehicle (EV), with Vehicle to Grid (V2G) capability.
The studied system has 20 kW power rating and allows an intercoil
distance between 17 and 25 cm with an offset direction x and
y of 10 cm. The control of the converters has also wireless
features. Efficiency results of the whole DC-DC power structure
with the coupler are presented for several misalignments of the
vehicle side. Finally, a way to improve the converters efficiency
is proposed, using a dedicated control allowing working in full
bridge synchronous rectifier mode, depending on the operating condition.