Wireless Power Transfer circuit for e-bike battery charging system

In this paper a Serie Series­Resonant Inductive Power Transfer (SS­RIPT) circuit for wireless e­bike battery charger is proposed. The system architecture is accurately described, while highlighting the main features of a suitable design procedure. A simulation model is developed in PSIM software to verify the circuit is fully functional. A full­scale proptotype of a 80 W battery charger has been realized, with particular attention to the layout optimization in order to minimize weight and volume of the final product. Moreover, it is equipped with two XBee­Pro S2 radios to also obtain a wi­fi communication between the primary and secondary side. Experimental tests carried out on the prototype confirm the effectiveness of the proposed design and control approach.