USA | Automotive Regulatory

SAE’s New Electric Vehicle Wireless Charging Standard

The American Society of Automotive Engineers (SAE) has recently published a new standard for wireless power transfer (WPT) for electric vehicles

The standard SAE J2954 Wireless Power Transfer for Light-Duty Plug-in/Electric Vehicles and Alignment Methodology establishes an industry-wide specification that defines acceptable criteria for interoperability, electromagnetic compatibility, EMF, minimum performance, safety, and testing for wireless power transfer (WPT) of light duty plug-in electric vehicles.  It applies both to the vehicles and the charging infrastructure.

SAE J2954 addresses unidirectional charging, from grid to vehicle; bidirectional energy transfer may be evaluated for a future standard. The standard is intended to be used in stationary applications (charging while vehicle is not in motion); dynamic applications may also be considered in the future. In this version, only above-ground (surface mounted) installations are covered.

The standard was first officially proposed in May 2016 but SAE and automaker engineers have at least been thinking about it since 2007.

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