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ITGlossary · EV charging
Dynamic Load Balancing
A function that continuously measures the building's consumption and automatically lowers the charging power so the supply limit is not exceeded.
Technical level:Intermediate
A meter or current sensor is installed at the incoming supply in the main panel and tells the charger how much current the house is drawing. When the water heater, cooker and air conditioners run together, the charger turns down; when those loads switch off, it ramps up again. Where there are several chargers, the same logic shares the available power among them.
This often avoids upgrading the supply and tripping the main breaker, a common problem in homes with a single-phase supply.
AC charging cannot run below 6 A per phase; if the margin falls lower, charging pauses temporarily. Install the sensor upstream of all the building's loads, not on a single circuit.
Related terms
- Charging Power (kW)How much energy flows into the battery per hour, which in AC charging depends on voltage, current and the number of phases.
- On-board Charger (OBC)The converter inside an electric vehicle that turns the station's AC into DC and sets the maximum AC charging power.
- Smart ChargingCharging that adapts current and voltage to battery condition and temperature, or an EV charger’s power to the site’s available capacity.
- Solar Surplus Charging (PV Charging)A charger function that uses surplus solar production to charge the vehicle instead of exporting it to the grid.
- ATS (Automatic Transfer Switch)A device that automatically moves the load from the grid to a generator during an outage and back again when grid power returns.
- CCS2 (Combined Charging System)The European connector standard that adds two DC pins below a Type 2 plug, allowing fast DC charging through the same vehicle inlet.