Abstract
This work demonstrates the feasibility of size-adjustable coils to minimize the reduction of the transfer efficiency due to the lateral misalignment between the source and load coils in a resonant-type wireless power transfer system. Experimental results for a 6.78 MHz system reveals that by reducing the size of the coil adaptively according to the misalignment, the transfer efficiency can be maintained above 80% even when effective overlapping area is reduced to 11.5% between a 20 × 20 cm2 coil pair. Moreover, the proposed coil system successfully removes the transfer null caused by a large misalignment. The proposed virtual system is expected to maintain the transfer efficiency higher than 40% even when the misalignment is such that one coil is completely outside the other.
| Original language | English |
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| Title of host publication | 2018 IEEE Wireless Power Transfer Conference, WPTC 2018 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (Electronic) | 9781538651599 |
| DOIs | |
| Publication status | Published - 2019 Feb 11 |
| Event | 2018 IEEE Wireless Power Transfer Conference, WPTC 2018 - Montreal, Canada Duration: 2018 Jun 3 → 2018 Jun 7 |
Publication series
| Name | 2018 IEEE Wireless Power Transfer Conference, WPTC 2018 |
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Conference
| Conference | 2018 IEEE Wireless Power Transfer Conference, WPTC 2018 |
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| Country/Territory | Canada |
| City | Montreal |
| Period | 18/6/3 → 18/6/7 |
Bibliographical note
Funding Information:ACKNOWLEDGMENT This work was supported by the Korea Evaluation Institute of Industrial Technology(KEIT) Research Grant of 2017(’10047815’).
Funding Information:
This work was supported by the Korea Evaluation Institute of Industrial Technology(KEIT) Research Grant of 2017('10047815').
Publisher Copyright:
© 2018 IEEE.
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering