Interleaved Boost Converter Integrated Inductive Power Transfer System for Wireless Vehicle Charging Applications

The proposed onboard wireless charger is new with respect to the kind of onboard AC/ DC topologies used with the receiver unit. It is based on the cascade connection of two-phase interleaved boost converter and full bridge resonant circuit. It offers wide range control of voltage gain and also bears higher efficiency due to single stage power conversion for the received power. Due to superior efficiency, constant current operation and high performance under misalignment conditions double sided LCC compensation has been used for the resonant tank. This topology also saves number of active switch count by sharing of switches between the two-phase boost converter and full bridge resonant circuit. Also, there is no need of isolation of receiver coil during the discharging of the EV battery due to use of LCC compensation. The proposed charger topology is simulated using MATLAB simulation platform to validate the charge/ discharge operation of the wireless charger and also a scale down prototype is built to verify these functionality.