Closed loop control design for WPT system using power and data frequency division multiplexing technique
For wireless power transfer (WPT) system, close loop control fed from pick up side is an important issue, in which a communication link is needed. Power and data frequency division multiplexing (FDM) transfer technique is attractive because it embeds communication into power transfer and uses the same coreless coils. By employing this method, a simplified closed loop control method for WPT system is proposed in this paper. Compared to conventional closed loop WPT systems, the proposed design eliminates extra communication channels and enhances the reliability of feedback. Moreover, the phase shifted control model of the FDM based WPT system is derived, and it provides guideline for the controller design. Based on the analysis, both simulation and experimental results of a 100 W prototype are presented to verify the effectiveness of feedback communication and power transfer.
2016 IEEE Energy Conversion Congress and Exposition (ECCE)