WOLFRAM SYSTEM MODELER
TransformerYDTest example with polyphase components |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Electrical.Polyphase.Examples.TransformerYD"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Test example with polyphase components:
Star-connected voltage source feeds via a Y-D-transformer with internal impedance (RT, LT) a load resistor RT.
Using f=5 Hz LT=3mH defines nominal voltage drop of approximately 10 %.
Simulate for 1 second (2 periods) and compare voltages and currents of source, transformer and load.
Parameters (8)
| m |
Value: 3 Type: Integer Description: Number of phases |
|---|---|
| V |
Value: 1 Type: Voltage (V) Description: Amplitude of Star-Voltage |
| f |
Value: 5 Type: Frequency (Hz) Description: Frequency |
| Lm |
Value: 1 Type: Inductance (H) Description: Transformer main inductance |
| LT |
Value: 0.003 Type: Inductance (H) Description: Transformer stray inductance |
| RT |
Value: 0.05 Type: Resistance (Ω) Description: Transformer resistance |
| RL |
Value: 1 Type: Resistance (Ω) Description: Load Resistance |
| nT |
Value: 1 / sqrt((1 - Modelica.Math.cos(2 * Modelica.Constants.pi / m)) ^ 2 + Modelica.Math.sin(2 * Modelica.Constants.pi / m) ^ 2) Type: Real Description: Transformer ratio |
Components (12)
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sineVoltage |
Type: SineVoltage Description: Polyphase sine voltage source |
|---|---|---|
 |
starS |
Type: Star Description: Star-connection |
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groundS |
Type: Ground Description: Ground node |
 |
idealTransformer |
Type: IdealTransformer Description: Polyphase ideal transformer |
|
starT |
Type: Star Description: Star-connection |
 |
deltaT2 |
Type: Delta Description: Delta (polygon) connection |
|
groundT |
Type: Ground Description: Ground node |
 |
transformerR |
Type: Resistor Description: Ideal linear electrical resistors |
 |
transformerL |
Type: Inductor Description: Ideal linear electrical inductors |
|
loadR |
Type: Resistor Description: Ideal linear electrical resistors |
|
starL |
Type: Star Description: Star-connection |
|
groundL |
Type: Ground Description: Ground node |