Abstract
Wireless charging systems are foreseen as an effective solution to improve the convenience and safety of conventional conductive chargers. As this technology has matured, recent broad applications of wireless chargers to electrified transportation have indicated a trend toward higher power, power density, modularity, and scalability of designs. In this article, commercial systems and laboratory prototypes are reviewed, focusing mostly on the advances in high-power wireless charging systems. The recent endeavors in magnetic pad designs, compensation networks, power electronics converters, control strategies, and communication protocols are illustrated. Both stationary and dynamic (in-motion) wireless charging systems are discussed, and critical differences in their designs and applications are emphasized. On that basis, the comparisons among different solutions and design considerations are summarized to present the essential elements and technology roadmap that will be necessary to support large-scale deployment of high-power wireless charging systems. The review is concluded with the discussion of several fundamental challenges and prospects of high-power wireless power transfer (WPT) systems. Foreseen challenges include utilization of advanced materials, electric and electromagnetic field measurement and mitigation, customization, communications, power metering, and cybersecurity.
| Original language | English |
|---|---|
| Article number | 9151200 |
| Pages (from-to) | 886-919 |
| Number of pages | 34 |
| Journal | IEEE Transactions on Transportation Electrification |
| Volume | 6 |
| Issue number | 3 |
| DOIs | |
| State | Published - Sep 2020 |
Funding
This article has been coauthored by the Oak Ridge National Laboratory, operated by UT-Battelle, LLC, under Contract 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, and 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). Manuscript received June 24, 2020; accepted July 17, 2020. Date of publication July 28, 2020; date of current version September 18, 2020. This work was supported by the U.S. Department of Energy, Vehicle Technologies Office funded projects under the “Batteries and Electrification to Enable Extreme Fast Charging (XFC)” Funding Opportunity Announcement, DE-FOA-0001808. Both NCSU and ORNL are the recipients of this award and collaborated for this publication. (Corresponding author: Hao Feng.) Hao Feng, Reza Tavakoli, and Zeljko Pantic are with the Electrical and Computer Engineering Department, North Carolina State University, Raleigh, NC 29695 USA (e-mail: [email protected]; [email protected]; [email protected]).
Keywords
- High-power wireless chargers
- transportation electrification
- wireless charging systems
