No abstract

This paper proposes a simplified method for designing four-coil resonant wireless power transfer (WPT) networks by sequential application of impedance reflection through mutual inductances.Experimental validation is presented, and accuracy and limitations of the method are described.The method appears useful for first-pass (approximate) design, but accurate simulation requires consideration of mutual inductances of non-adjacent coils.

Reports from experimental laboratory work have described catastrophic failure of power MOSFETs used in square-wave voltage sources driving resonant four-coil wireless power-transfer (WPT) networks. Simulation with PSpice has duplicated the problem, identified its probable origins, and presents possible avenues for amelioration.