.BuildingSystems.Electrical.AC.ThreePhasesUnbalanced.Loads.Examples.Loads_N

Information

This example model shows how three-phase unbalanced loads with the neutral cable can be used.

This model contains three different loads of different type. They start in a balanced configuration and at time t = 0.25 s the loads on the first phase start to increase their power consumption.

When the loads start to be unbalanced the sensors starts to measure a current in the neutral cable sen.I[4]. This is the current necessary to satisfy the Kirchoff Current Law (KCL) such that the algebraic sum of the phase current in each load is equal to zero.

Revisions

• September 24, 2015, by Michael Wetter:
  Removed assignment of P_nominal to avoid the warning "The following parameters with fixed = false also have a binding" in Dymola 2016.
• September 24, 2014, by Marco Bonvini:
  Created model from previus version and added documentation.