WOLFRAM SYSTEM MODELER
IMC_DOLDirect on line (DOL) start of induction machine with squirrel cage |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Magnetic.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.
At start time tStart three-phase voltage is supplied to the induction machine with squirrel cage. The machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.
Simulate for 1.5 seconds and plot (versus time):
currentRMSsensorM|E.I: equivalent RMS stator currentaimcM|E.wMechanical: machine speedaimcM|E.tauElectrical: machine torque
Parameters (8)
| VsNominal |
Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase |
|---|---|
| fNominal |
Value: aimcData.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: 0.29 Type: Inertia (kg⋅m²) Description: Load inertia |
| p |
Value: 2 Type: Integer Description: Number of pole pairs |
| aimcData |
Value: Type: IM_SquirrelCageData Description: Induction machine data |
Components (17)
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ground |
Type: Ground Description: Ground node |
|---|---|---|
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star |
Type: Star Description: Star-connection |
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sineVoltage |
Type: SineVoltage Description: Polyphase sine voltage source |
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idealCloser |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
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booleanStep |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
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currentRMSsensorM |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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currentRMSsensorE |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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terminalBoxM |
Type: TerminalBox Description: Terminal box Y/D-connection |
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terminalBoxE |
Type: TerminalBox Description: Terminal box Y/D-connection |
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aimcM |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage |
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aimcE |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage rotor |
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loadInertiaM |
Type: Inertia Description: 1D-rotational component with inertia |
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loadInertiaE |
Type: Inertia Description: 1D-rotational component with inertia |
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quadraticLoadTorqueM |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
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quadraticLoadTorqueE |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
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aimcData |
Type: IM_SquirrelCageData Description: Induction machine data |
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currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Continuous quasi current RMS sensor for polyphase system |