SAE Update - November 2023 - 35

STANDARDS &
COMMITTEES
V2X can be difficult to explain, but
SAE's Hybrid Communication and
Interoperability Task Force created
a series of standards to help.
the bidirectional DC charging station. These are
choices on implementation, but the design needs to
include them; this is clearly stated in the standard.
Additional communication from the ATS to charging
station, along with backup power for communication,
is also included.
This SAE Standard identifies the complete system
and explains " what to do, " not " how to do it. " Each
system or sub-system can determine the amount of
integration of components to meet the overall
requirements for their equipment. The home system
needs to meet these requirements and the vehicle
needs to interact with the DC charging station with
the same interface.
SAE J2847/2, which was revised in September 2023,
vehicle and charging station
during the initialization phase of
message exchange. This update
also identifies the complete
requirements for the home that
need to be considered, such as
the home's main utility panel
may need some changes, like
adding an automatic transfer
switch (ATS)-the same as a
home generator would require. A
home balancing transformer may
also need to be added for V2H,
since the home is no longer
connected to the utility
transformer to balance the 120
VAC phase circuits, unless this
balancing function is a part of
UPDATE
focuses on DC V2G/V2H, since the bidirectional
inverter is offboard the vehicle.
SAE J2847/3 has also been updated for AC V2G/
V2H and is in the final ballot cycle. There are choices
for the customer to choose an DC or AC system. It is
important for both standards to be in place. Whether
the bidirectional inverter is offboard (DC V2G) or
onboard (AC V2G), it is required to meet additional
grid stability functions such as voltage, frequency
adjustments, and more. SAE J2847/3 complements
the Sunspec Profile standard that identifies the steps
and exchange of messages when the vehicle connects
to the AC charging station installed in the home.
The SAE Hybrid Communication and
Interoperability Task Force did not stop with V2H and
V2G. SAE J2847/5 covers AC V2L and AC V2V, thus
completing the entire V2X features for OEMs.
(Equipment suppliers have standards in place for their
own designs and products.) These provide common
solutions for customers to select various OEM vehicles
and equipment and use interoperable products. V2L
November 2023
35

SAE Update - November 2023

Table of Contents for the Digital Edition of SAE Update - November 2023

SAE Update - November 2023 - Cov1
SAE Update - November 2023 - Cov2
SAE Update - November 2023 - 1
SAE Update - November 2023 - 2
SAE Update - November 2023 - 3
SAE Update - November 2023 - 4
SAE Update - November 2023 - 5
SAE Update - November 2023 - 6
SAE Update - November 2023 - 7
SAE Update - November 2023 - 8
SAE Update - November 2023 - 9
SAE Update - November 2023 - 10
SAE Update - November 2023 - 11
SAE Update - November 2023 - 12
SAE Update - November 2023 - 13
SAE Update - November 2023 - 14
SAE Update - November 2023 - 15
SAE Update - November 2023 - 16
SAE Update - November 2023 - 17
SAE Update - November 2023 - 18
SAE Update - November 2023 - 19
SAE Update - November 2023 - 20
SAE Update - November 2023 - 21
SAE Update - November 2023 - 22
SAE Update - November 2023 - 23
SAE Update - November 2023 - 24
SAE Update - November 2023 - 25
SAE Update - November 2023 - 26
SAE Update - November 2023 - 27
SAE Update - November 2023 - 28
SAE Update - November 2023 - 29
SAE Update - November 2023 - 30
SAE Update - November 2023 - 31
SAE Update - November 2023 - 32
SAE Update - November 2023 - 33
SAE Update - November 2023 - 34
SAE Update - November 2023 - 35
SAE Update - November 2023 - 36
SAE Update - November 2023 - 37
SAE Update - November 2023 - 38
SAE Update - November 2023 - 39
SAE Update - November 2023 - 40
SAE Update - November 2023 - 41
SAE Update - November 2023 - 42
SAE Update - November 2023 - 43
SAE Update - November 2023 - 44
SAE Update - November 2023 - 45
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SAE Update - November 2023 - 48
SAE Update - November 2023 - 49
SAE Update - November 2023 - 50
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