PRODUCTS & SERVICES
The hardware structure of a
DC charging station for electric
vehicles is defined in its core in
the IEC 61851-23 standard for
conductive charging systems. In
addition, the standard specifies
the insulation measurement and
the charging process including
when and how the DC contactors
must switch and when current and
voltage must be spread.
During the charging process,
the electric vehicle permanently
requests the target current and
voltage. Accordingly, these values
must be sent to the power
electronics of the charging station
as nominal values. The power
electronics then sets the required
values and additionally transmits
them to the current inverter
communication protocol.
Alternatively, the reference
values can be recorded by separate
measuring devices and transmitted
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charging station can be adjusted at
any time during the active charging
process. All values of the charging
process are available to the
controller and can be displayed on
the user interface for visualization
as well as for energy management.
Even transmission and
conversion to other systems
and protocols can be carried out
without any problems using the
available standard libraries. The
programmer of the charging station
does not have to deal with the
protocol itself, they can concentrate
on optimizing the values instead.
Many small helping elements
considerably reduce the e ort and
costs for the user’s overriding goal
of the construction of a highperformance
charging station.
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to the vehicle as present current
and present voltage values in the
communication protocol. According
to the standard, these values may
only deviate to a minor degree. If
they are not precise enough, the
charging process is interrupted
immediately. As a result, the DC
charge controller has to convert
the analog signals with high
precision into the values for digital
communication. Correct signal
transmission ensures stable
and fail-safe operation of the
charging station.
The values recorded by the
measuring devices can be
transferred to a billing system
for cost calculation of the charging
processes. The values are also
interesting for an energy
management system as depending
on how much energy is currently
available for the charging process
the maximum current of the
Numerous free
programming
options extend the
application range
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