WOLFRAM SYSTEM MODELER
IMS_StartTest example: InductionMachineSlipRing |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.InductionMachines.IMS_Start"]
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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 induction machine with sliprings; the machine starts from standstill, accelerating inertias against load torque quadratic dependent on speed, using a starting resistance. At time tStart2 external rotor resistance is shortened, finally reaching nominal speed.
Simulate for 1.5 seconds and plot (versus time):
- currentQuasiRMSSensor.I: stator current RMS
- aims.wMechanical: motor's speed
- aims.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 |
| Rstart |
Value: 0.16 / aimsData.turnsRatio ^ 2 Type: Resistance (Ω) Description: Starting resistance |
| tStart2 |
Value: 1.0 Type: Time (s) Description: Start time of shorting starting resistance |
| 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 |
| aimsData |
Value: Type: IM_SlipRingData Description: Induction machine data |
Components (12)
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aims |
Type: IM_SlipRing Description: Induction machine with slipring rotor |
|---|---|---|
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currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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sineVoltage |
Type: SineVoltage Description: Polyphase sine voltage source |
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star |
Type: Star Description: Star-connection |
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ground |
Type: Ground Description: Ground node |
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booleanStep |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
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idealCloser |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
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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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terminalBox |
Type: TerminalBox Description: Terminal box Y/D-connection |
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switchedRheostat |
Type: SwitchedRheostat Description: Rheostat which is shortened after a given time |
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aimsData |
Type: IM_SlipRingData Description: Induction machine data |