A Novel Driving Scheme for Inductive Power Transfer Systems Using Decoupled Transmitter Coils

Abstract

This paper explores a novel and unsymmetri-cal driving scheme for an inductive power transfer system using decoupled transmitter (TX) coils. Instead of driving each TX in the same way, the proposed driving scheme would employ various compensations for different coils, and the power flow of each TX are closely coupled. Through circuit analysis, the proposed system would have multiple operation modes to avoid over load conditions. Meanwhile, it would maintain the benefits of a multiple-TX system like high misalignment tolerance, and enable the system design and control like a single-TX one, e.g., having load-independent output voltage. The experiment demonstrates the waveform of normal mode and protection mode, load-independent output voltage.