WOLFRAM SYSTEMMODELER

IMC_Transformer

Induction machine with squirrel cage starting with transformer

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_Transformer"]
Out[1]:=

Information

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

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 are used.

Parameters (9)

VNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: imc.fsNominal

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

imcData

Value:

Type: AIM_SquirrelCageData

Components (30)

imcQS

Type: IM_SquirrelCage

iSensorQS

Type: CurrentQuasiRMSSensor

sineVoltageQS

Type: VoltageSource

starQS

Type: Star

groundQS

Type: Ground

booleanStep1QS

Type: BooleanStep[m]

idealCloserQS

Type: IdealClosingSwitch

transformerQS

Type: Yy00

ground2QS

Type: Ground

transformerData

Type: TransformerData

booleanStep2QS

Type: BooleanStep[m]

idealCommutingSwitchQS

Type: IdealCommutingSwitch

loadInertiaQS

Type: Inertia

quadraticLoadTorqueQS

Type: QuadraticSpeedDependentTorque

terminalBoxQS

Type: TerminalBox

imcData

Type: AIM_SquirrelCageData

imc

Type: AIM_SquirrelCage

iSensor

Type: CurrentQuasiRMSSensor

sineVoltage

Type: SineVoltage

star

Type: Star

ground

Type: Ground

booleanStep1

Type: BooleanStep[m]

idealCloser

Type: IdealClosingSwitch

transformer

Type: Yy00

ground2

Type: Ground

booleanStep2

Type: BooleanStep[m]

idealCommutingSwitch

Type: IdealCommutingSwitch

loadInertia

Type: Inertia

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

terminalBox

Type: TerminalBox