Abstract
This paper presents the analysis of the near-field magnetic flux in a three-dimensional wireless power transmitter. The three-dimensional wireless power transmitter is constructed based on the concept of Helmholtz coil, which was originally invented for generating a constant static magnetic field. In recent years, this concept has been applied to wireless power transfer, enabling omnidirectional wireless charging. To facilitate the analysis and implementation of such three-dimensional wireless power transmitters, we conducted an analysis on their magnetic field distribution. In this study, we first present the theoretical calculation results. Additionally, we provide finite element simulation results and experimental data to verify the analysis. Moreover, we incorporate the magnetic flux modulation technique to the wireless power transmitter. By combining the evenly distributed magnetic flux and this modulation technique, a consistent magnetic flux linkage on the receiver coil is achieved. © 2024 IEEE.
| Original language | English |
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| Title of host publication | Proceedings of 2024 IEEE Wireless Power Technology Conference and Expo (WPTCE2024) |
| Publisher | IEEE |
| Pages | 395-399 |
| ISBN (Electronic) | 9798350349139 |
| ISBN (Print) | 9798350349146 |
| DOIs | |
| Publication status | Published - 2024 |
| Externally published | Yes |
| Event | 2024 IEEE Wireless Power Technology Conference and Expo (WPTCE2024) - Uji Campus of Kyoto University, Kyoto, Japan Duration: 8 May 2024 → 11 May 2024 https://ieee-wptce2024.org/ |
Publication series
| Name | Proceedings of IEEE Wireless Power Technology Conference and Expo, WPTCE |
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Conference
| Conference | 2024 IEEE Wireless Power Technology Conference and Expo (WPTCE2024) |
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| Abbreviated title | WPTCE 2024 |
| Country/Territory | Japan |
| City | Kyoto |
| Period | 8/05/24 → 11/05/24 |
| Internet address |
Research Keywords
- Helmholtz coil
- magnetic field modulation
- Magnetic flux
- near-field
- wireless power transfer