D25.8 - Integrated Hybrid Inductive and Capacitive Power Transfer System with Asymmetrical PCB Self-Resonator

Thursday, March 20, 2025

11:30 AM – 1:30 PM ET

Location: Level Three, A301

Technical Dialogue Presenter(s)

Yun Yang, PhD

Nanyang Technological University

Presentation Paper

Co-Author(s)

Yao Wang (he/him/his)

Nanyang Technological University
ZS

Zhen Sun

Nanyang Technological University
XZ

Xiangrong Zhang

Nanyang Technological University
SH

Shu Yuen Ron Hui

The University of Hong Kong

This digest presents the design of a compact hybrid wireless transfer system (WPT) with an integrated printed-circuit-board (PCB) based self-resonant coupler. The proposed system consists of four PCB coil plates with integrated inductance and capacitance. With a stacked plate configuration, both inductive and capacitive power transfer channels are formed, and self-resonance is achieved between the coil inductance and the coupling capacitances of PCB coil plates without using external compensation. Operating at a frequency beyond 3 MHz, a 250W hybrid WPT system is implemented. The preliminary experimental results at transfer distances of 12mm and 37mm demonstrate the peak DC-DC efficiency of 87.25% at 155.67W and 86.66% at 237.5W. Future work will investigate the system performance at longer transfer distances and different misalignments as well as the optimization of the self-resonant coupler.