SAE J2954 Recommended Practice enables automated wireless charging to 11 kW

Evatran Plugless power

SAE International has published a new Recommended Practice (RP), SAE J2954, which provides the first worldwide specification for wireless power transfer (WPT) up to power levels of 11 kW (WPT 3). This follows the organization’s previous Technical Information Report J2954, which dealt with power levels up to 7.7 kW (WPT 2).

The new RP also provides a standardized test stand that gives EV manufacturers and infrastructure companies a means for testing performance and validation of products.

The RP establishes a new methodology using magnetic triangulation for vehicle alignment to assist manual as well as autonomous parking. Coupled with communications, SAE J2954 can enable EV drivers to seamlessly park their vehicles, establish payment and charge, without customer interaction.

“The SAE J2954 RP establishes the methodology for designs and testing of wireless power transfer for EVs up to 11 kW,” said Jesse Schneider, Chair of the SAE Wireless Power Transfer and Alignment Taskforce.  “It does much more than that, by enabling an automated and seamless ‘charge-and-park’ experience for the customer. Wireless power transfer using J2954 also gives the soon-to-be commercialized autonomous vehicle a way to align itself and charge automatically, even during inclement weather. Thus, it enables customers and taxi fleets a way to charge without the need for human interaction. This disruptive technology changes the game for EVs by removing the need for the customer to plug in – making the act of charging not about the plug, but parking in the right spot.”

 

Source: SAE International via Green Car Congress

  • jstack6

    That more than most level 2 charging provides. Most are 6 kW and Tesla destination Charging is 8 kW. Maybe this standard could run at 6 kW and be more efficient since most wireless links lose 10% with the transfer. What’s the big hurry ? If you want fast get a Tesla with Super Charging that runs about 120 kW so far.

  • Rick Henderson

    As far as an autonomous charging system high speed would become an issue – you want your assets back earning money as soon as possible. Some direct connection method, like the Power Docking Port System, will be a better answer for that need.