Attaining Arbitrary Load Independent Voltage Gain and Minimizing Inverter VA Rating in S(C)-S(C) Compensated Wireless Power Transfer Links

It is well known that fixed-frequency constant-coupling series(capacitor)-series(capacitor) (S(C)-S(C)) compensated inductive wireless power transfer links (IWPTL) may be designed to operate with load-independent voltage gain (LIVG) within bounds dictated by parameters of the loosely coupled transformer (LCT). Lately, it has been shown that these bounds may be extended by employing series(inductor)-series(capacitor) (S(L)-S(C)) or series(capacitor)-series(inductor) (S(C)-S(L)) compensation networks, allowing attaining arbitrary LIVG at the expense of utilizing full-rating inductors as compensation elements. This work proposes a design method allowing to simultaneously attain arbitrary LIVG with S(C)-S(C) compensated IWPTL and minimize inverter VA rating. The revealed methodology is validated in PSIM simulation and experiments.