Abstract
This article investigates a novel magnetic power distribution (MPD) system that utilizes conductive magnetic power transfer and wireless power transfer methods. The proposed system employs U- and I-type magnetic cores to form a single-input and multiple-output system, where the U-type magnetic core serves as the transmitter or receiver, and the I-type magnetic core acts as the flux conduction path. By inserting low relative permeability (LRP) I cores between two high relative permeability (HRP) I cores and placing additional U magnetic cores in parallel with the LRP I cores, multiple outputs with different power ratings can therefore be realized. Analysis of operating frequency and the effect of LRP I core on power distribution is presented in detail through theory and simulation. Finally, a prototype with a wide range output power of 200W-550W is tested to evaluate the performance of the proposed MPD system with one- and two-receiver modes, in which the system with a single receiver achieves 329W with a system efficiency of 82.77%, while the system with two receivers obtained a total output power of 422.73W with 86.98% system efficiency.