A novel time-sharing current-fed ZCS high frequency inverter-applied resonant DC-DC converter for inductive power transfer

Abstract

This paper presents a novel prototype of a time-sharing frequency doubler principle-based current-fed zero current soft-switching (ZCS) high frequency resonant (HF-R) inverter for inductive power transfer (IPT) systems. The newly-proposed ZCS HF-R inverter is suitable for producing a higher frequency resonant current with switching power loss reduction by using a middle-class switching frequency insulated-gate-bipolar-power transistor (IGBT). In order to continuously regulate the output power, resonant current phasor control (RCPC) is newly applied. The performances of the newly-proposed IPT resonant power converter are demonstrated by experiment, after which the feasibility of the circuit topology and control method is discussed from a practical point of view.