Synchronous Transmission of Power and Data for Wireless Power Transfer System Using Double LCC

In this paper, a synchronous transmission system of power and full-duplex data based on double-side LCC compensation topology and dual-resonance structure is proposed to achieve full duplex communication of data. In the power channel, the constant current characteristic of the LCC topology enables efficient and stable energy transmission, while reducing the interference of the power transmission on the data channel. Data channel is based on dual-resonant structure to achieve bidirectional data transmission, and uses its impedance characteristics to suppress the interference of the same side signal source, so as to achieve full-duplex communication. By analyzing the impedance of each part of the data channel, the transfer function and the gain of the data transmission are deduced. Based on the equivalent circuit of power interference and ipsilateral source interference under non-ideal conditions, the transfer function of power and data interference is obtained. By the simulation and experimental results, the feasibility of the proposed system is verified.