Abstract
Dynamic wireless charging of electric vehicles (EV) is an emerging charging technology to enable non-contact wireless charging while the vehicle is moving. Compared to stationary wireless charging, in-motion wireless charging involves dynamic processes in which an EV is passing over the charging pads (transmitters). This in-motion process makes the dynamic electromagnetic (EM) environment more complicated, and EM safety needs to be ensured under all circumstances. This is due to the fact that the entire vehicle body may be exposed to magnetic fields while the vehicle moves over the energized transmitter. This paper investigates several typical charging scenarios when EVs approach, pass over, and move away from the charging pads. Quasi-dynamic models, which are preliminarily verified by coils' inductance measurements, are developed to analyze the dynamic process. Based on the quasi-dynamic analysis, shielding solutions are also studied to ensure EM safety for the dynamic wireless charging processes.
| Original language | English |
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| Title of host publication | 2021 IEEE Transportation Electrification Conference and Expo, ITEC 2021 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| Pages | 771-775 |
| Number of pages | 5 |
| ISBN (Electronic) | 9781728175836 |
| DOIs | |
| State | Published - Jun 21 2021 |
| Event | 2021 IEEE Transportation Electrification Conference and Expo, ITEC 2021 - Chicago, United States Duration: Jun 21 2021 → Jun 25 2021 |
Publication series
| Name | 2021 IEEE Transportation Electrification Conference and Expo, ITEC 2021 |
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Conference
| Conference | 2021 IEEE Transportation Electrification Conference and Expo, ITEC 2021 |
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| Country/Territory | United States |
| City | Chicago |
| Period | 06/21/21 → 06/25/21 |
Funding
This manuscript was authored by Idaho National Laboratory, operated by Battelle Energy Alliance with the U.S. Department of Energy under DOE Contract No. DE-AC07-05ID14517. This manuscript has been co-authored by Oak Ridge National Laboratory, operated by UT-Battelle, LLC, under Contract No. DE-AC05-00OR22725 with the U.S. Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan). ACKNOWLEDGMENT This work was supported by the U.S. Department of Energy (DOE), Vehicle Technologies Office, under the project FY2019 VTO AOI 3B: “High Power and Dynamic Wireless Charging for Electric Vehicles,” with collaborative partners Oak Ridge National Laboratory, Idaho National Laboratory, and National Renewable Energy Laboratory. The authors thank Eric J. Dufek from Idaho National Laboratory for management and lab coordination. All authors also thank Lee Slezak from U.S. DOE for project oversight and technical leadership.
Keywords
- Dynamic wireless power transfer
- Electric vehicle
- Electric vehicle charging
- Electromagnetic field
- Inductive power transfer
- Shielding
- Wireless power transfer