Researchers complete bench testing to validate SAE wireless charging standard

EV wireless charging diagram 9-28-10

Researchers from Idaho National Laboratory (INL), along with the DOE and several automotive companies, have completed bench testing to support SAE Technical Information Report (TIR) J2954, a guideline for wireless charging that was published earlier this year.

The SAE’s TIR J2954 is designed to ensure the performance and safety of Wireless Power Transfer (WPT) systems, as well as interoperability between components from different vendors.

INL researchers tested wireless charging systems from Toyota, WiTricity, and Qualcomm. Interoperability between wireless power classes (up to 7.7 kW) and different topologies (Double D from Qualcomm and Circular Topologies) was demonstrated, with efficiencies exceeding 85-90% under aligned conditions.

TIR J2954 also covers Electromagnetic Compatibility (EMC) and Electromagnetic Field (EMF) validation of WPT systems, in order to maintain safe exposure levels for humans and medical devices.

“Idaho National Laboratory has successfully validated SAE TIR J2954 on the bench, which gives confidence in the interoperability, safety and performance values,” said Richard “Barney” Carlson, an INL engineer who managed the test program. “J2954 standardization enables any compatible vehicle to pull into a wireless power space and have automated charging without doing anything except parking. Automated wireless charging can be done in conjunction with autonomous parking.”

The results of the INL tests will be published in 2017, and a J2954 standard will be published in 2018.

 

 

Source: SAE International