Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies
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...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2023-01-01
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| Series: | IEEE Open Journal of the Industrial Electronics Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10380768/ |
| _version_ | 1797339241748889600 |
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| author | Yining Liu Nam Ha-Van Prasad Jayathurathnage Jorma Kyyra Sergei A. Tretyakov |
| author_facet | Yining Liu Nam Ha-Van Prasad Jayathurathnage Jorma Kyyra Sergei A. Tretyakov |
| author_sort | Yining Liu |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-08T09:43:06Z |
| format | Article |
| id | doaj.art-c90d098f38e24232b5010ce7fd5318e7 |
| institution | Directory Open Access Journal |
| issn | 2644-1284 |
| language | English |
| last_indexed | 2024-03-08T09:43:06Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of the Industrial Electronics Society |
| spelling | doaj.art-c90d098f38e24232b5010ce7fd5318e72024-01-30T00:07:44ZengIEEEIEEE Open Journal of the Industrial Electronics Society2644-12842023-01-01477378510.1109/OJIES.2024.334955610380768Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz FrequenciesYining Liu0https://orcid.org/0000-0002-9100-0203Nam Ha-Van1https://orcid.org/0000-0003-0257-5273Prasad Jayathurathnage2https://orcid.org/0000-0002-6732-8348Jorma Kyyra3https://orcid.org/0000-0002-8178-0613Sergei A. Tretyakov4https://orcid.org/0000-0002-4738-9987Department of Electrical Engineering and Automation, Aalto University, Espoo, FinlandDepartment of Electronics and Nanoengineering, Aalto University, Espoo, FinlandDepartment of Electrical Engineering and Automation, Aalto University, Espoo, FinlandDepartment of Electrical Engineering and Automation, Aalto University, Espoo, FinlandDepartment of Electronics and Nanoengineering, Aalto University, Espoo, FinlandSimultaneous 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.https://ieeexplore.ieee.org/document/10380768/Confined magnetic fieldmultiple receiversmegahertz (MHz)parasitic effectswireless power transfer (WPT) |
| spellingShingle | Yining Liu Nam Ha-Van Prasad Jayathurathnage Jorma Kyyra Sergei A. Tretyakov Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies IEEE Open Journal of the Industrial Electronics Society Confined magnetic field multiple receivers megahertz (MHz) parasitic effects wireless power transfer (WPT) |
| title | Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies |
| title_full | Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies |
| title_fullStr | Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies |
| title_full_unstemmed | Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies |
| title_short | Design and Performance Analysis of a Repeater-Assisted Multireceiver Wireless Power Transfer System Operating at MHz Frequencies |
| title_sort | design and performance analysis of a repeater assisted multireceiver wireless power transfer system operating at mhz frequencies |
| topic | Confined magnetic field multiple receivers megahertz (MHz) parasitic effects wireless power transfer (WPT) |
| url | https://ieeexplore.ieee.org/document/10380768/ |
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