aalto1 untyped-item.component.html
Design and Performance Analysis of a Repeater-Assisted, Multi-Receiver Wireless Power Transfer System Operating At MHz Frequencies
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
13
Series
IEEE Open Journal of the Industrial Electronics Society, Volume 4, pp. 773-785
Abstract
Simultaneous wireless power transfer (WPT) to multiple receivers (Rxs) is an important requirement for wireless charging of consumer electronic devices. In this article, we propose a WPT coil structure capable of achieving independent multi-Rx WPT with a confined and uniform rotating magnetic field at megahertz operating frequencies. Compared with the existing multiple receiver WPT structures, the proposed structure exhibits low leakage flux outside the power transmitter. Thanks to the single-coil transmitter structure and the load-independent current feature in the repeater coil, no additional control circuit is needed to obtain independent power transfer to multiple receiver devices. The proposed solution is experimentally demonstrated in a 6.78-MHz 80-W WPT prototype, with a dc-to-dc efficiency of 90.2 % in the full-load case using four 20-W receiver circuits.
Description
Publisher Copyright: Authors
Other note
Citation
Liu, Y, Ha-Van, N, Jayathurathnage, P, Kyyra, J & Tretyakov, S A 2024, 'Design and Performance Analysis of a Repeater-Assisted, Multi-Receiver Wireless Power Transfer System Operating At MHz Frequencies', IEEE Open Journal of the Industrial Electronics Society, vol. 4, pp. 773-785. https://doi.org/10.1109/OJIES.2024.3349556