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EV-Pluribus Unum: Protocols and Transition Challenges of the NACS/SAE J3400 EV Charging Interface (Part 2) (Download)

April 19, 2024

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In Part 1, we introduced the SAE J3400 EV charging interface standard and Tesla's NACS connector that it's based on. As we mentioned, the specification includes a series of interlocks and safety protocols to ensure that only one power-delivery path can be active at a given time (Fig. 1). Both the SAE J3400 connector and the latest version of the Tesla charging interface, referred to as NACS (2021 and beyond), support vehicle-charger communications using the dual-mode powerline communication (PLC) protocol defined in the IEC 61851 standard.

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