modelImpedances
This model tests three-phase unbalanced impedances with and without neutral cable
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
This example model shows how to use three-phase unbalanced impedances with and without neutral cable.
This model contains two identical inductive impedances with and without neutral cable. The impedances have inputs that allow to change the value of their resistances and inductances externally. The values start to change from their minimum to their maximum values at time t = 0.25 s.
The unbalanced impedance that has the neutral cable
sen_N.I[4] is able to measure the current in the neutral. that is
the current necessary to satisfy the Kirchoff Current Law (KCL)
such that the algebraic sum of the phase current in each impedance is equal to zero.
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Sources.FixedVoltage_N | sou_N | Voltage source with neutral cable | |
| Sensors.GeneralizedSensor_N | sen_N | Power sensor with neutral cable | |
| Impedance_N | imp_N | Impedance with neutral cable | |
| Sources.FixedVoltage | sou | Voltage source without neutral cable | |
| Sensors.GeneralizedSensor | sen | Power sensor without neutral cable | |
| Impedance | imp | Impedance without neutral cable | |
| Modelica.Blocks.Sources.Ramp | var_RL | Power signal for loads on phase 1 |
Revisions
-
September 24, 2014, by Marco Bonvini:
Created model from previus version and added documentation.