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How does a Smart Charging Network (SCN) work exactly?

 

Overview

The Smart Charging Network (SCN) is a solution where multiple charging stations are connected via a LAN to manage power distribution locally. All charging stations align their charging speeds among each other.

 

Power Distribution

For every socket used, the SCN decides the charging speed based on total power consumption. Connected charging stations exchange data on current charging capacity for all vehicles. When a vehicle is fully charged, other connected vehicles receive more power.

 

Connection Loss

If a charging station loses connection with the others, if falls back to the configured safe current. The total power at the point of interconnection (POI) is divided over connected sockets based on settings.

 

Charging Current Management

The SCN ensures the total charging current on stations with two sockets never exceeds the maximum station current.

 

Configuration Parameters

Before using the SCN, the following parameters need to be configured:

  • Maximum current value of the grid connection
  • Maximum current value of the charging station
  • Maximum current value per socket (applicable for multi-socket charging stations)
  • Safe current value
  • Alternating period

 

Here is a short explanation of the paramaters:

 

Maximum current value of the grid connection

The maximum current that is available from the grid connection.

 

Maximum current value of the charging station

The maximum current a charging station (Station Max Current) or socket (Socket Max. Current) is allowed to provide.

 

Maximum current value per socket (applicable for multi-socket charging stations)

The maximum current a socket (Socket Max. Current) is allowed to provide.

 

Safe current value

The available power reserved for a socket when the charging station loses connection.

 

Alternating period
In case the available current in a charging station or group of charging stations is insufficient to serve all connected EVs, they will be charged one after the other. The available power is divided and communicated to connected EVs, whilst other charging sessions will be resumed for a set period of time (alternating period).