Control system proposal for WET system targeting peak efficiency and peak power point operation

The current trend puts emphasis on the efficiency of the all electronics devices. For this reason it is necessary to maximize the efficiency almost for the wireless energy transfer (WET) systems, which are rapidly increasing their practical implementation in various application areas. This article deals with the analysis of the most suitable operating point of the serial - serial (SS) compensated WET system, while proper control system is proposed for maintenance the required operational point (simultaneously the highest possible efficiency and the highest power delivery). The article presents circuit solution for control of WET system, whereby main characteristic of proposal is related to the ability of achieving maximal efficiency and maximal power delivery within any mutual distance between transmitter and receiver. Proposal is initially confirmed by analysis of transfer characteristics of SS compensated WET system, and consequently experimentally verified with the measurements on the system prototype.