Equivalent circuit and coil design for spatial freedom of wireless charging
- Authors
- Choi, B.-H.; Lee, J.-H.
- Issue Date
- 2020
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Keywords
- Inductive coupling; Positional freedom; T-equivalent circuit; Wireless power transfer (WPT); Z-parameter
- Citation
- 2020 IEEE Wireless Power Transfer Conference, WPTC 2020, pp.238 - 240
- Journal Title
- 2020 IEEE Wireless Power Transfer Conference, WPTC 2020
- Start Page
- 238
- End Page
- 240
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/30124
- DOI
- 10.1109/WPTC48563.2020.9295538
- ISSN
- 0000-0000
- Abstract
- Wireless charging is widely used as a convenience that allows users to charge electronic devices without wires. However, the receiver on the wireless charging pad is not charged if the receiver is misaligned. Therefore, it is needed to adjust the center of the receiver well. This misalignment may greatly reduce the convenience of wireless charging. To overcome this limitation of wireless charging, a coil with an increased outer diameter and a double coil were designed to improve the positional freedom of receiver. The complex circuit of a double coil is converted into the T-equivalent circuit. The efficiency is obtained by measuring and simulating the Z-parameter at the frequency of 100 kHz. The efficiency of the coil with a large outer diameter and the double coil decreased at the center, but the efficiency improved when shifted by 15 mm. The trends in measurement and simulation are observed to be similar. © 2020 IEEE.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.