Publication Type
Conference Paper
Book Title
2023 IEEE Wireless Power Technology Conference and Expo (WPTCE)
Publication Date
Page Numbers
1 to 5
Publisher Location
New Jersey, United States of America
Conference Name
IEEE Wireless Power Technology Conference and Expo (WPTCE)
Conference Location
San Diego, California, United States of America
Conference Sponsor
IEEE
Conference Date
-
Abstract
In this paper, the design methodology of a high-frequency, high-power, long-distance inductive wireless power transfer (WPT) is presented. The airgap (d) of a traditional high-power (>1 kW) WPT is limited to a few hundred millimeters, which is almost 1/4th of the coil diameter, D; d ≤ D/4. In this paper, the power transfer distance is significantly increased (d ≥ 1.5D) by adopting a high-frequency magnetic design and GaN-based power electronics. The material and design of the coil and shield are investigated using FEA and tested experimentally. A high frequency 6.78 MHz wireless charging system was built to transfer 1 kW power over 3 m airgap.
