WOLFRAM SYSTEM MODELER
IMC_DOLInduction machine with squirrel cage started directly on line (DOL) |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Magnetic.QuasiStatic.FundamentalWave.Examples.BasicMachines.InductionMachines.IMC_DOL"]
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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 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 torque
Parameters (9)
| m |
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 |
Outputs (2)
Components (27)
 |
voltageSourceQS |
Type: VoltageSource Description: Constant polyphase AC voltage |
|---|---|---|
 |
starQS |
Type: Star Description: Star connection |
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groundQS |
Type: Ground Description: Electrical ground |
 |
powerSensorQS |
Type: PowerSensor Description: Power sensor |
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currentQuasiRMSSensorQS |
Type: CurrentQuasiRMSSensor Description: Continuous quasi current RMS sensor for polyphase system |
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idealCloserQS |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
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booleanStepQS |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
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ground |
Type: Ground Description: Ground node |
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star |
Type: Star Description: Star-connection |
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cosineVoltage |
Type: CosineVoltage Description: Polyphase cosine voltage source |
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idealCloser |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
|
booleanStep |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
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currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Continuous quasi current RMS sensor for polyphase system |
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terminalBox |
Type: MultiTerminalBox Description: Terminal box Y/D-connection |
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imc |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage |
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loadInertia |
Type: Inertia Description: 1D-rotational component with inertia |
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quadraticLoadTorque |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
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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 |