Abstract
A multi-transmitter structure with LCC compensation is widely utilized in wireless power transfer (WPT) systems to ensure stable output over a board range. Turning off the transmitting coils with low coupling coefficients is usually necessary to improve overall efficiency. However, due to the inevitable coupling between the transmitting and receiving coils, an induced current will also be generated in the deactivated transmitting coils. This paper accurately models the current of deactivated coils and the circulating current between the TX coils. The result indicates that the current in the deactivated coil has a similar amplitude to that in the activated coils but is phase- inverted, leading to additional losses and a reduction in the maximum output power of the system. Simulations and experiments have verified the accuracy of the modeling. © 2025 IEEE.
| Original language | English |
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| Title of host publication | 2025 IEEE Wireless Power Technology Conference and Expo (WPTCE) - Proceedings |
| Publisher | IEEE |
| ISBN (Electronic) | 979-8-3315-1743-4 |
| ISBN (Print) | 979-8-3315-1744-1 |
| DOIs | |
| Publication status | Published - 2025 |
| Event | 2025 IEEE Wireless Power Technology Conference and Expo (WPTCE 2025) - University of Rome “La Sapienza”, Rome, Italy Duration: 3 Jun 2025 → 6 Jun 2025 https://ieee-wptce.org/ |
Publication series
| Name | IEEE Wireless Power Technology Conference and Expo, WPTCE - Proceedings |
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Conference
| Conference | 2025 IEEE Wireless Power Technology Conference and Expo (WPTCE 2025) |
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| Place | Italy |
| City | Rome |
| Period | 3/06/25 → 6/06/25 |
| Internet address |
Research Keywords
- circulating current
- LCC compensation
- multi-transmitter