modelLoads_N
This model tests unbalanced load models with neutral cable connection
Extends from Modelica.Icons.Example (Icon for runnable examples).
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.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Sources.FixedVoltage_N | sou | Voltage source | |
| Modelica.Blocks.Sources.Ramp | ph_1 | Power signal for loads on phase 1 | |
| Modelica.Blocks.Sources.Constant | ph_23 | Power signal for loads on phase 2 and 3 | |
| Resistive_N | loaR_N | Resistive load with neutral cable | |
| Inductive_N | loaRL_N | Inductive load with neutral cable | |
| Capacitive_N | loaRC_N | Capacitive load with neutral cable | |
| Sensors.GeneralizedSensor_N | sen | Power sensor with neutral cable |
Revisions
-
September 24, 2015, by Michael Wetter:
Removed assignment ofP_nominalto 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.