WOLFRAM SYSTEM MODELER
IMC_DOLInduction machine with squirrel cage started directly on line (DOL) |
![]() |
SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_DOL"]
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 polyphase induction machine.
At start time tOn
a transient and a quasi-static polyphase 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 currentimc|imcQS.wMechanical
: machine speedimc|imcQS.tauElectrical
: machine torquem |
Value: 3 Type: Integer Description: Number of phases |
---|---|
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: IM_SquirrelCageData Description: Induction machine data |
![]() |
voltageSourceQS |
Type: VoltageSource Description: Constant polyphase AC voltage |
---|---|---|
![]() |
starQS |
Type: Star Description: Star connection |
![]() |
groundQS |
Type: Ground Description: Electrical ground |
![]() |
powerSensorQS |
Type: PowerSensor Description: Power sensor |
![]() |
currentQuasiRMSSensorQS |
Type: CurrentQuasiRMSSensor Description: Continuous quasi current RMS sensor for polyphase system |
![]() |
idealCloserQS |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
![]() |
booleanStepQS |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
![]() |
ground |
Type: Ground Description: Ground node |
![]() |
star |
Type: Star Description: Star-connection |
![]() |
cosineVoltage |
Type: CosineVoltage Description: Polyphase cosine voltage source |
![]() |
idealCloser |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
![]() |
booleanStep |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
![]() |
currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Continuous quasi current RMS sensor for polyphase system |
![]() |
terminalBox |
Type: MultiTerminalBox Description: Terminal box Y/D-connection |
![]() |
imc |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage |
![]() |
loadInertia |
Type: Inertia Description: 1D-rotational component with inertia |
![]() |
quadraticLoadTorque |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
![]() |
powerSensor |
Type: PowerSensor Description: Polyphase instantaneous power sensor |
![]() |
loadInertiaQS |
Type: Inertia Description: 1D-rotational component with inertia |
![]() |
quadraticLoadTorqueQS |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
![]() |
imcData |
Type: IM_SquirrelCageData Description: Induction machine data |
![]() |
imcQS |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage |
![]() |
groundMachineQS |
Type: Ground Description: Electrical ground |
![]() |
starMachineQS |
Type: Star Description: Star connection |
![]() |
terminalBoxQS |
Type: MultiTerminalBox Description: Terminal box Y/D-connection |
![]() |
starMachine |
Type: Star Description: Star-connection |
![]() |
groundMachine |
Type: Ground Description: Ground node |