The total output of one or more charging points can be regulated with the help of load management (LM). This means that the building connection is not overloaded. Usually, a measuring device at the house connection is necessary for this purpose. There are different levels and variants of load management.
Simple / static load management
This is the simplest form of load management. The available energy is statically capped for all connected charging points combined. The charging capacity of individual vehicles is reduced accordingly if additional vehicles are connected for charging.
Dynamic load management
The available charging power is adjusted to the power consumption of other vehicles or other consumers at the building connection. This means that more charging current is available at certain times (e.g., at night), which can then be distributed to the vehicles. On the other hand, if a lot of electricity is consumed, the charging power will be reduced accordingly.
Some dynamic load management systems can also take into account regenerative energy sources such as a photovoltaic system. For example, you charge only when the sun is shining.
Smart load management
In addition to other consumer loads, smart load management systems also take into account the charging needs of vehicles and users. For example the factor time. Vehicles that need to be available sooner, for example, are given priority. In addition, the current need can also be included. The car charges only as much as is actually needed for the next trip. This means that more electricity is available to other vehicles.
Zero-Gap load management
Zero-Gap load management is a patent pending technology. It reacts almost in real time to power fluctuations occurring in the building and to switch off without fault currents. The switching is faster than the building connection’s fuse can react.
Load control via ripple control signals
Energy suppliers can stipulate that charging infrastructure can be controlled or switched off using a ripple control signal. This enables the energy supplier to regulate large loads remotely when the network load is disproportionately high.
Time-based load management
This special form of load management is not really load management. Several charging points connected to a building connection line are activated with a time delay. A fixed charging capacity is therefore not exceeded. The vehicles are never charged at the same time, but one after the other.