WOLFRAM SYSTEMMODELER

AIMC_Transformer

Test example: AsynchronousInductionMachineSquirrelCage transformer starting

Diagram

Wolfram Language

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

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

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):
  • currentQuasiRMSSensor.I: stator current RMS
  • aimc.wMechanical: motor's speed
  • aimc.tauElectrical: motor's torque
Default machine parameters of model AIM_SquirrelCage are used.

Parameters (9)

VNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: 50

Type: Frequency (Hz)

Description: Nominal frequency

tStart1

Value: 0.1

Type: Time (s)

Description: Start time

tStart2

Value: 2.0

Type: Time (s)

Description: Start time of bypass transformer

TLoad

Value: 161.4

Type: Torque (N·m)

Description: Nominal load torque

wLoad

Value: 1440.45 * 2 * Modelica.Constants.pi / 60

Type: AngularVelocity (rad/s)

Description: Nominal load speed

JLoad

Value: 0.29

Type: Inertia (kg·m²)

Description: Load's moment of inertia

transformerData

Value:

Type: TransformerData

Description:

aimcData

Value:

Type: AIM_SquirrelCageData

Description:

Components (16)

aimc

Type: AIM_SquirrelCage

Description:

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

Description:

sineVoltage

Type: SineVoltage

Description:

star

Type: Star

Description:

ground

Type: Ground

Description:

booleanStep1

Type: BooleanStep[m]

Description:

idealCloser

Type: IdealClosingSwitch

Description:

transformer

Type: Yy00

Description:

ground2

Type: Ground

Description:

transformerData

Type: TransformerData

Description:

booleanStep2

Type: BooleanStep[m]

Description:

idealCommutingSwitch

Type: IdealCommutingSwitch

Description:

loadInertia

Type: Inertia

Description:

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

Description:

terminalBox

Type: TerminalBox

Description:

aimcData

Type: AIM_SquirrelCageData

Description: