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SAE publishes Wireless Charging standard

SAE International has published a new global standard that specifies both the vehicle-side and charger-side requirements for wireless charging of EVs. The new standard, SAE J2954, was more than a decade in the making. In 2007, when SAE began its research, there were few EVs on the market, and wireless power transfer (WPT) may have… Read more »

SAE publishes recommended practices for automated EV charging systems

As the EV market expands, there’s a pressing need for more standardization of DC power distribution, especially for buses and heavy-duty vehicles. SAE International’s new standard SAE J-3105: Electric Vehicle Power Transfer System Using Conductive Automated Connection Devices Recommended Practice promotes the safe testing and performance of mechanized conductive power transfer systems, primarily for vehicles… Read more »

SAE works to develop common Public Key Infrastructure for Plug & Charge

The Plug & Charge system, which will enable EV charging with no need for a membership card or smartphone app, is expected to be operational in 2020. In order to support a more secure implementation of Plug & Charge, SAE International plans to form an industry-led research project to create a common Public Key Infrastructure… Read more »

SAE updates J2954 wireless charging standards for EVs up to 11 kW

SAE International has published a second version of Recommended Practice (RP) SAE J2954, its standard for wireless power transfer (WPT) for EVs of up to 11 kW power levels. The RP establishes specifications for interoperability, electromagnetic compatibility, EMF, minimum performance, safety, and testing for wireless charging of light-duty electric and plug-in EVs. SAE is seeking… Read more »

SAE releases new J3068 specification for charging of medium- and heavy-duty EVs

SAE International has published its recommended practice for plug-in charging of heavy-duty EVs. The new J3068 standard allows vehicles to fully utilize three-phase AC power. Presenting a symmetric three-phase load enhances grid stability, especially at high power levels. SAE J3068 standardizes an AC three-phase-capable charging coupler and digital control protocols, offering sufficient power and reliability… Read more »

SAE J2954 Recommended Practice enables automated wireless charging to 11 kW

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… Read more »

SAE releases global standard for wireless charging

At a recent standards meeting, carmakers, Tier 1 suppliers, and technology providers have reached agreement on key technical and procedural elements of the upcoming SAE Recommended Practice (RP) for Wireless Power Transfer (WPT) and automated parking alignment and charging. The goal of this standardization is to ensure interoperability among different brands of EVs and wireless… Read more »

Researchers complete bench testing to validate SAE wireless charging standard

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,… Read more »

SAE announces agreement on wireless power transfer frequency and power classes

The SAE task force working on a standard for Wireless Power Transfer (WPT) has reached agreement on two important factors. These will be incorporated into a Technical Information Report, which is scheduled to be complete in early 2014. The TIR will be followed by publication of the official SAE J2954 Standard. “A common frequency of… Read more »