Impact of Internal Resistances on Performance of Receiver-Side Compensation Circuit for Inductive Power Transfer Systems

A compensation circuit comprising of only capacitors at the receiver-side has been proposed to mitigate the no-load current in inductive power transfer systems where the transmitter is compensated by a series capacitor. It has been shown that this receiver-side compensation method features load-independent constant voltage if internal resistances of the coils are negligibly small. In this work, we investigate the impact of internal resistances to provide further insights into the behavior of this method under practical conditions. Our analysis and simulation results show that even under the impact of internal resistances constant voltage functionality can also be achieved, however” at sufficiently large value of the load resistance.