WOLFRAM SYSTEMMODELER

AIMC_Transformer

Test example: AsynchronousInductionMachineSquirrelCage transformer starting

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.AsynchronousInductionMachines.AIMC_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: 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

aimcData

Value:

Type: AIM_SquirrelCageData

Components (16)

aimc

Type: AIM_SquirrelCage

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

sineVoltage

Type: SineVoltage

star

Type: Star

ground

Type: Ground

booleanStep1

Type: BooleanStep[m]

idealCloser

Type: IdealClosingSwitch

transformer

Type: Yy00

ground2

Type: Ground

transformerData

Type: TransformerData

booleanStep2

Type: BooleanStep[m]

idealCommutingSwitch

Type: IdealCommutingSwitch

loadInertia

Type: Inertia

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

terminalBox

Type: TerminalBox

aimcData

Type: AIM_SquirrelCageData

Extended by (1)

AIMC_Transformer

Modelica.Electrical.Machines.Examples.Transformers

Test example: AsynchronousInductionMachineSquirrelCage transformer starting