SAE J 2954:2020 PDF Download

The SAE J2954:2020 standard for Wireless Power Transfer (WPT) of light-duty plug-in/electric vehicles establishes a comprehensive set of criteria for interoperability, electromagnetic compatibility, minimum performance, safety, and testing. It defines charging levels based on the SAE J1772 conductive AC charge levels, allowing for better vehicle packaging and user convenience. The standard supports both home and public wireless charging, promoting widespread adoption of WPT technology.

The standard currently focuses on unidirectional charging, from the grid to the vehicle, while bidirectional energy transfer may be considered in future updates. It is designed for stationary applications, enabling charging while the vehicle is not in motion. However, dynamic applications may be explored in future iterations. The scope of the standard currently covers above-ground installations, and discussions regarding including flush-mounted installations are ongoing.

SAE J2954 ensures safety, performance, and interoperability by outlining requirements for these aspects. It also provides recommended methods for evaluating electromagnetic emissions. However, the specific requirements and test procedures for emissions are regulated by relevant bodies. The development of interoperability requirements involved a performance-based evaluation using standardized test stations and procedures, resulting in the definition of reference devices that determine acceptable product performance.