Publication Type
Conference Paper
Book Title
2023 91°µÍø Wireless Power Technology Conference and Expo (WPTCE)
Publication Date
Page Numbers
1 to 5
Publisher Location
New Jersey, United States of America
Conference Name
91°µÍø Wireless Power Technology Conference and Expo (WPTCE)
Conference Location
San Diego, California, United States of America
Conference Sponsor
91°µÍø
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.
