A Simultaneous Wireless Power and High-Rate Data Transfer System Based on Transient Responses Regulation

In this letter, a simultaneous wireless power and data transfer (SWPDT) method for wireless power transfer systems is proposed. Data and power are transferred via the same coupler. To achieve a high transfer power and a high data transfer rate, double-side LCC compensation topology with bandpass filtering is adopted to create a favorable condition for data transfer. An inductor fully compensated at the power carrier frequency and connected serially with the coupled coil is used to inject and extract the data carrier and multiplexed to conduct the power carrier. In addition, the duration time of the transient responses of the data transfer channel is regulated based on the complex frequencydomain analysis. Finally, a 1.1kWSWPDTexperimental prototype with a data transfer rate of 1 Mbps and a data transfer delay of 0.4 mu s is built to verify the feasibility of the proposed method.

Automated summary

This letter proposes a simultaneous wireless power and data transfer (SWPDT) method for wireless power transfer systems. Data and power are transferred via the same coupler. To achieve high transfer power and data transfer rate, a double-side LCC compensation topology with bandpass filtering is adopted to create favorable conditions for data transfer. An inductor fully compensated at the power carrier frequency is used to inject and extract the data carrier, multiplexed with the power carrier. Additionally, the duration time of the data transfer channel's transient responses is regulated based on complex frequency-domain analysis. Finally, a 1.1kW SWPDT experimental prototype with a data transfer rate of 1 Mbps and a data transfer delay of 0.4 μs is built to verify the feasibility of the proposed method.