The Study of the Controlling Resonant Wireless Power Transfer Using Bluetooth Communication

Wireless power transfer technology has become a recent big issue for mobile phones industry, which can be classified into two types: inductive type and resonant type. Inductive type usually has higher efficiency but requires short distance between the transmitter and receiver. And resonant type has much better freedom from distance. Wireless power transfer system combines with several major blocks including the transmitter circuits, receiver circuits, and communication block of both sides. Among the numerous resonant wireless power transfer mechanisms, the one Resonant Power Tranfer Consortium announce using 6.78MHz or 13.56MHz band for wireless power transfer. The efficiency of the communication algorithm is also important since there are a lot of informations using bluetooth, NFC communication for wirelss power transfer. In this paper, we suggest a new communication algorithm ande circuit for wireless power transfer with simple structure and high efficiency.