Abstract
This paper proposes a wireless power transfer (WPT) platform with integrated energy conversion that has the capability for 1) recharging the energy storage systems (ESSs) from the grid systems, including renewable energy sources such as wind, solar, etc., 2) off grid systems recharging the ESSs from dc grid systems, 3) grid recharging of electric vehicles (EVs), and 4) off grid recharging of EVs from ESSs. The unique aspect of the method is the use of multi-interface power electronic converter for the grid and ESSs and EVs that can support a range of applications with ac / dc and dc / dc energy conversion ability in a single converter system. The key enabling technology to achieve these functionalities is Oak Ridge Converter (ORC) with polyphase coupler coil system both developed at ORNL. This new technology enables higher power density WPT systems while allowing the coils to interface from ac grid at 60 Hz frequency or dc source directly merging with 85 kHz operating frequency of switching component. The experimental results of the proposed system are presented for 20 kW output power with the system overall efficiency around 95.4% from dc source and 93% overall efficiency from ac grid achieving 9-10% current total harmonic distortion (THD) and 0.98-0.99 power factor (PF).
| Original language | English |
|---|---|
| Pages | 464-468 |
| Number of pages | 5 |
| DOIs | |
| State | Published - 2022 |
| Event | 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 - Houston, United States Duration: Mar 20 2022 → Mar 24 2022 |
Conference
| Conference | 37th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2022 |
|---|---|
| Country/Territory | United States |
| City | Houston |
| Period | 03/20/22 → 03/24/22 |
Funding
This project is funded by Oak Ridge National Laboratory's Laboratory Directed Research and Development (LDRD) Program's Transformational Energy Science and Technology (TEST) initiative with the project ID LOIS-9505. This research used resources available at the Power Electronics and Electric Machinery Research Center located at the National Transportation Research Center, a DOE EERE User Facility operated by the Oak Ridge National Laboratory (ORNL). The authors would like to thank the TEST Initiative Lead, Dr. Ilias Belharouak for his support of this work and his guidance. Authors also acknowledge the support and guidance of ORNL Sustainable Transportation Program Manager, Dr. Rich Davies, which is greatly appreciated. This manuscript has been 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 non-exclusive, paid-up, irrevocable, world-wide 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).
Keywords
- Oak Ridge Converter
- energy storage
- grid
- high frequency
- resonant
- wireless power transfer
