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Validation of Wireless Power Transfer up to 11kW Based on SAE J2954 with Bench and Vehicle Testing
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 2, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Wireless Power Transfer (WPT) promises automated and highly efficient charging of electric and plug-in-hybrid vehicles. As commercial development proceeds forward, the technical challenges of efficiency, interoperability, interference and safety are a primary focus for this industry.
The SAE Vehicle Wireless Power and Alignment Taskforce published the Recommended Practice J2954 to help harmonize the first phase of high-power WPT technology development. SAE J2954 uses a performance-based approach to standardizing WPT by specifying ground and vehicle assembly coils to be used in a test stand (per Z-class) to validate performance, interoperability and safety. The main goal of this SAE J2954 bench testing campaign was to prove interoperability between WPT systems utilizing different coil magnetic topologies. This type of testing had not been done before on such a scale with real automaker and supplier systems. Several automakers, suppliers and government employees worked together to create a test plan, perform the testing and analyze the results.
To evaluate the interoperability, performance, and electromagnetic emissions of this technology, a bench test program was created, supported by the SAE J2954 WPT and Alignment Taskforce along with the US Department of Energy's Idaho National Lab and TDK North America. The latest tests were conducted between two different power classes (3.7 kW and 11kW) and two different coil magnetic topologies. This report describes the testing program and contains results from the different WPT systems. This testing validates the second stage of SAE J2954 standardization and proves that WPT is not only possible over an air gap with ground clearance of 250mm, but also interoperable across power classes and system designs while achieving high efficiency (many tests were above 90% AC to DC efficiency). In addition, susceptibility of representative medical devices to electromagnetic emissions from WPT systems was assessed. The results of this report are being used as a basis for the future SAE J2954 Standard.
- Jesse Schneider - Nikola Corporation
- Richard Carlson - Idaho National Lab
- Jonathan Sirota - WiTricity Corporation
- Robert Sutton - TDK RF Solutions
- Eloi Taha - Nissan Technical Center
- Morris Kesler - WiTricity Corporation
- Kensuke Kamichi - Toyota Motor Corporation
- Ivo Teerlinck - Toyota Motor Europe NV/SA
- Hiroyuki Abeta - Nissan Motor Co., Ltd.
- Yusuke Minagawa - Nissan Motor Co., Ltd.
- Satoshi Yazaki - IHI Corporation
- Uooyeol Yoon - KAIST
- Kiyotaka Kawashima - Honda R & D Americas Inc.
- Sam Muskett - Lear Corporation
- Theodore Bohn - Argonne National Laboratory
- Sebastian Mathar - Qualcomm Technologies Inc.
- Daniel Mikat - Toyota Technical Center USA Inc.
- Joshua Guag - US FDA
- Seth Seidman - US FDA
- Ron Reitan - Boston Scientific Corporation
CitationSchneider, J., Carlson, R., Sirota, J., Sutton, R. et al., "Validation of Wireless Power Transfer up to 11kW Based on SAE J2954 with Bench and Vehicle Testing," SAE Technical Paper 2019-01-0868, 2019, https://doi.org/10.4271/2019-01-0868.
Data Sets - Support Documents
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- SAE J2954 Recommended Practice, “Wireless Power Transfer for Light-Duty Plug-In / Electric Vehicles and Alignment Methodology”, 2019.
- SAE J2894/1, “Power Quality Requirements for Plug-In Electric Vehicle Chargers,” 2011.
- ICNIRP 2010, “Guidelines for Limiting Exposure to Time-Varying Electric and Magnetic Fields (1 Hz to 100 kHz),” 2010.
- “Bench Testing Validation of Wireless Power Transfer up to 7.7kW Based on SAE J2954,” SAE International Journal of Passenger Cars - Electronic and Electrical Systems, V127-7EJ.
- ANSI/AAMI/ISO 14117:2012, “Active Implantable Medical Devices - Electromagnetic Compatibility - EMC Test Protocols for Implantable Cardiac Pacemakers, Implantable Cardioverter Defibrillators, and Cardiac Resynchronization Devices.”
- ICNIRP 1998, “Guidelines for Limiting Exposure to Time-Varying Electric, Magnetic, and Electromagnetic Fields (up to 300 GHz),” 1998.