A new Push-pull Class-Φ Converter for Multi-MHz Dual-frequency Wireless Power Transfer Applications

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Journal Title
Journal ISSN
Volume Title
Conference article in proceedings
Date
2023
Major/Subject
Mcode
Degree programme
Language
en
Pages
7
1613-1619
Series
2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023, IEEE Energy Conversion Congress and Exposition
Abstract
We propose a novel converter for simultaneous dual-frequency wireless power transfer (WPT) devices. The proposed converter realizes independent WPT channels at two frequencies: the main frequency fs and the second harmonic 2fs. With the coupled-T-network, a new class-Φ based push-pull inverter is introduced to provide load-independent currents for two transmitter coils. The power channels at two frequencies are decoupled and independent from each other, providing high flexibility for individual or simultaneous WPT at both frequency bands. The experimental WPT system has verified the characteristics of the proposed converter, realizing 64 W: 16 W power transfer for 6.78 MHz and 13.56 MHz receivers, respectively, with 80 % system efficiency.
Description
Publisher Copyright: © 2023 IEEE.
Keywords
dual frequency, independent power channel, multi-MHz, resonant converter, wireless power transfer
Other note
Citation
Liu , Y , Jayathurathnage , P , Tretyakov , S A & Kyyrä , J 2023 , A new Push-pull Class-Φ Converter for Multi-MHz Dual-frequency Wireless Power Transfer Applications . in 2023 IEEE Energy Conversion Congress and Exposition, ECCE 2023 . IEEE Energy Conversion Congress and Exposition , IEEE , pp. 1613-1619 , IEEE Energy Conversion Congress and Exposition , Nashville , Tennessee , United States , 29/10/2023 . https://doi.org/10.1109/ECCE53617.2023.10362393