WOLFRAM SYSTEMMODELER

IMC_DOL

Induction machine with squirrel cage started directly on line (DOL)

Diagram

Wolfram Language

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

Information

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

This example compares a time transient and a quasi static model of a multi phase induction machine. At start time tOn a transient and a quasi static multi phase voltage source are connected to an induction machine. The machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.

Simulate for 1 second and plot (versus time):

  • currentRMSsensor.I|currentSensorQS.abs_i[1]: (equivalent) RMS stator current
  • imc|imcQS.wMechanical: machine speed
  • imc|imcQS.tauElectrical: machine torque

Parameters (8)

VsNominal

Value: 100

Type: Voltage (V)

Description: Nominal RMS voltage per phase

fNominal

Value: imc.fsNominal

Type: Frequency (Hz)

Description: Nominal frequency

tOn

Value: 0.1

Type: Time (s)

Description: Start time of machine

T_Load

Value: 161.4

Type: Torque (N·m)

Description: Nominal load torque

w_Load

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

Type: AngularVelocity (rad/s)

Description: Nominal load speed

J_Load

Value: 0.5

Type: Inertia (kg·m²)

Description: Load inertia

p

Value: 2

Type: Integer

Description: Number of pole pairs

imcData

Value:

Type: AIM_SquirrelCageData

Description: Machine data

Outputs (2)

Itr

Default Value: currentQuasiRMSSensor.I

Type: Current (A)

Description: Transient RMS current

Iqs

Default Value: currentQuasiRMSSensorQS.I

Type: Current (A)

Description: QS RMS current

Components (27)

voltageSourceQS

Type: VoltageSource

starQS

Type: Star

groundQS

Type: Ground

powerSensorQS

Type: PowerSensor

currentQuasiRMSSensorQS

Type: CurrentQuasiRMSSensor

idealCloserQS

Type: IdealClosingSwitch

booleanStepQS

Type: BooleanStep[m]

ground

Type: Ground

star

Type: Star

cosineVoltage

Type: CosineVoltage

idealCloser

Type: IdealClosingSwitch

booleanStep

Type: BooleanStep[m]

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

terminalBox

Type: MultiTerminalBox

imc

Type: AIM_SquirrelCage

loadInertia

Type: Inertia

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

powerSensor

Type: PowerSensor

loadInertiaQS

Type: Inertia

quadraticLoadTorqueQS

Type: QuadraticSpeedDependentTorque

imcData

Type: AIM_SquirrelCageData

Description: Machine data

imcQS

Type: IM_SquirrelCage

groundMachineQS

Type: Ground

starMachineQS

Type: Star

terminalBoxQS

Type: MultiTerminalBox

starMachine

Type: Star

groundMachine

Type: Ground