WOLFRAM SYSTEM MODELER

TransformerTestbench

Transformer test bench

Diagram

Wolfram Language

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SystemModel["Modelica.Electrical.Machines.Examples.Transformers.TransformerTestbench"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

Transformer test bench

You may choose different connections as well as vary the load (even not symmetrical).

Please pay attention to proper grounding of the primary and secondary part of the whole circuit.
The primary and secondary starpoint are available as connectors, if the connection is not delta (D or d).

In some cases it may be necessary to ground the transformer's starpoint even though the source's or load's starpoint are grounded:

  • Yy ... Grounding of transformer's primary or secondary starpoint with reasonable high earthing resistance is necessary.
  • Yd ... No grounding necessary.
  • Yz ... Grounding of transformer's primary starpoint with reasonable high earthing resistance is necessary.
  • Dy ... No grounding necessary.
  • Dd ... No grounding necessary.
  • Dz ... No grounding necessary.

Parameters (2)

RL

Value: fill(1 / 3, 3)

Type: Resistance[3] (Ω)

Description: Load resistance

transformerData

Value:

Type: TransformerData

Description: Transformer data

Components (18)

source

Type: SineVoltage

Description: Polyphase sine voltage source

starS

Type: Star

Description: Star-connection

groundS

Type: Ground

Description: Ground node

electricalPowerSensorS

Type: ElectricalPowerSensor

Description: Instantaneous power from space phasors

currentQuasiRMSSensorS

Type: CurrentQuasiRMSSensor

Description: Length of space phasor -> RMS current

voltageQuasiRMSSensorS

Type: VoltageQuasiRMSSensor

Description: Length of space phasor -> RMS voltage

deltaS

Type: Delta

Description: Delta (polygon) connection

earth

Type: Resistor

Description: Ideal linear electrical resistor

groundT

Type: Ground

Description: Ground node

voltageRMSSensorL

Type: VoltageQuasiRMSSensor

Description: Length of space phasor -> RMS voltage

deltaL

Type: Delta

Description: Delta (polygon) connection

currentQuasiRMSSensorL

Type: CurrentQuasiRMSSensor

Description: Length of space phasor -> RMS current

electricalPowerSensorL

Type: ElectricalPowerSensor

Description: Instantaneous power from space phasors

load

Type: Resistor

Description: Ideal linear electrical resistors

starL

Type: Star

Description: Star-connection

groundL

Type: Ground

Description: Ground node

transformerData

Type: TransformerData

Description: Transformer data

transformer

Type: Dy01

Description: Transformer Dy1