Power Manager - Dynamic load balancing

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Dynamic load balancing

Dynamic load balancing works by continuously monitoring the available capacity on the main circuit and then adjusts the offered current to the EV charger in real time to prevent overloading the household's electrical grid. This will ensure the fastest charging possible while at the same time limiting the peaks to not trip your household's main breaker.

Dynamic load balancing is a feature under Power Manager. Read more about Power Manager here.

Setup

To activate dynamic load balancing you need a Futurehome HAN and a Futurehome Charge, Zaptec or Easee.

  1. Open the app → click the energy tile on the dashboard.
  2. Click the lightning in the upper right corner to enter Power Manager and open “Dynamic load balancing”.
  3. Enter the capacity of your household's main breaker. This info is usually written in the course list inside the fuse box or directly on the main breaker.
  4. Set your safety margin. Balanced - 10% is default and recommended. *
  5. Select your available devices for load balancing.

*Safety margin sets the limit for when your devices start to scale down. In balanced 10%, your selected device will start to reduce the charging speed when the total power in your household reaches 90% of your main fuse's capacity.

Please note that dynamic load balancing only supports 1 EV charger per Smarthub.

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How does this work?

The Futurehome energy sensor sends energy reports to the Smarthub about the total consumption in your household. Since we know the maximum limit, how much is being used and the charging current, we can adjust the charging current to the available capacity.
In the examples below, this will be the illustrations:

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Example 1:

This is a 1 phase installation where we see an increase in load. The used load (yellow) plus the charging current (blue) equals more than the circuit breaker is designed for. Dynamic load balancing will therefore decrease the charging current to the available capacity (minus the security margin mentioned above).

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Example 1, the charging speed has been reduced due to an increase in other loads.

 

Example 2:

Here we have a TN 3-phase setup where we see an increase in load on the second phase (the yellow on the middle phase). The used load (yellow) plus the charging (blue) equals more than the circuit breaker is made for. Dynamic load balancing will therefor decrease the charging to the available capacity (minus the security margin mentioned above).

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Example 2, where all 3 phases are decreasing the load.

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