Modelica.Electrical.Machines.Examples.Transformers

Test examples of transformers

Information

This package contains test examples of DC machines.

Extends from Modelica.Icons.ExamplesPackage (Icon for packages containing runnable examples).

Package Content

Name Description
Modelica.Electrical.Machines.Examples.Transformers.TransformerTestbench TransformerTestbench Transformer test bench
Modelica.Electrical.Machines.Examples.Transformers.AsymmetricalLoad AsymmetricalLoad Asymmetrical load
Modelica.Electrical.Machines.Examples.Transformers.Rectifier6pulse Rectifier6pulse 6-pulse rectifier with 1 transformer
Modelica.Electrical.Machines.Examples.Transformers.Rectifier12pulse Rectifier12pulse 12-pulse rectifier with 2 transformers
Modelica.Electrical.Machines.Examples.Transformers.AIMC_Transformer AIMC_Transformer Test example: AsynchronousInductionMachineSquirrelCage transformer starting

Modelica.Electrical.Machines.Examples.Transformers.TransformerTestbench Modelica.Electrical.Machines.Examples.Transformers.TransformerTestbench

Transformer test bench

Information

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:

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

NameDescription
RL[3]Load resistance [Ohm]
transformerData 

Modelica.Electrical.Machines.Examples.Transformers.AsymmetricalLoad Modelica.Electrical.Machines.Examples.Transformers.AsymmetricalLoad

Asymmetrical load

Information

Asymmetrical (singlephase) load:

You may choose different connections.

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:

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

NameDescription
RLLoad resistance [Ohm]
transformerData 

Modelica.Electrical.Machines.Examples.Transformers.Rectifier6pulse Modelica.Electrical.Machines.Examples.Transformers.Rectifier6pulse

6-pulse rectifier with 1 transformer

Information

Test example with multiphase components:
Star-connected voltage source feeds via a transformer a diode bridge rectifier with a DC burden.
Using f=50 Hz, simulate for 0.1 seconds (5 periods) and compare voltages and currents of source and DC burden, neglecting initial transient.

Extends from Modelica.Icons.Example (Icon for runnable examples).

Parameters

NameDescription
VAmplitude of star-voltage [V]
fFrequency [Hz]
RLLoad resistance [Ohm]
CTotal DC-capacitance [F]
VC0Initial voltage of capacitance [V]
transformerData1 

Modelica.Electrical.Machines.Examples.Transformers.Rectifier12pulse Modelica.Electrical.Machines.Examples.Transformers.Rectifier12pulse

12-pulse rectifier with 2 transformers

Information

Test example with multiphase components:
Star-connected voltage source feeds via two transformers (Dd0 and Dy1) two diode bridge rectifiers with a single DC burden.
Using f=50 Hz, simulate for 0.1 seconds (5 periods) and compare voltages and currents of source and DC burden, neglecting initial transient.

Extends from Machines.Examples.Transformers.Rectifier6pulse (6-pulse rectifier with 1 transformer).

Parameters

NameDescription
VAmplitude of star-voltage [V]
fFrequency [Hz]
RLLoad resistance [Ohm]
CTotal DC-capacitance [F]
VC0Initial voltage of capacitance [V]
transformerData1 
transformerData2 

Modelica.Electrical.Machines.Examples.Transformers.AIMC_Transformer Modelica.Electrical.Machines.Examples.Transformers.AIMC_Transformer

Test example: AsynchronousInductionMachineSquirrelCage transformer starting

Information

Test example: Asynchronous induction machine with squirrel cage - transformer starting
At start time tStart1 three phase voltage is supplied to the asynchronous induction machine with squirrel cage via the transformer; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed; at start time tStart2 the machine is fed directly from the voltage source, finally reaching nominal speed.
Simulate for 2.5 seconds and plot (versus time): Default machine parameters of model AIM_SquirrelCage are used.

Extends from Machines.Examples.AsynchronousInductionMachines.AIMC_Transformer (Test example: AsynchronousInductionMachineSquirrelCage transformer starting).

Parameters

NameDescription
VNominalNominal RMS voltage per phase [V]
fNominalNominal frequency [Hz]
tStart1Start time [s]
tStart2Start time of bypass transformer [s]
TLoadNominal load torque [N.m]
wLoadNominal load speed [rad/s]
JLoadLoad's moment of inertia [kg.m2]
transformerData 
aimcData 
Automatically generated Thu Dec 19 17:19:56 2019.