WOLFRAM SYSTEM MODELER
IMC_ConveyorTest example: InductionMachineSquirrelCage with inverter driving a conveyor |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.InductionMachines.IMC_Conveyor"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
An ideal frequency inverter is modeled by using a VfController and a three-phase SignalVoltage. Frequency is driven by a load cycle of acceleration, constant speed, deceleration and standstill. The mechanical load is a constant torque like a conveyor (with regularization around zero speed).
Simulate for 20 seconds and plot (versus time):
- currentQuasiRMSSensor.I: stator current RMS
- aimc.wMechanical: motor's speed
- aimc.tauElectrical: motor's torque
Default machine parameters are used.
Parameters (7)
| VNominal |
Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase |
|---|---|
| fNominal |
Value: aimcData.fsNominal Type: Frequency (Hz) Description: Nominal frequency |
| wNominal |
Value: 2 * pi * fNominal / aimcData.p Type: AngularVelocity (rad/s) Description: Nominal speed |
| TLoad |
Value: 161.4 Type: Torque (N⋅m) Description: Nominal load torque |
| JLoad |
Value: 0.29 Type: Inertia (kg⋅m²) Description: Load's moment of inertia |
| r |
Value: 0.05 Type: Length (m) Description: Transmission radius |
| aimcData |
Value: Type: IM_SquirrelCageData Description: Induction machine data |
Components (13)
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aimc |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage rotor |
|---|---|---|
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currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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dutyCycle |
Type: CombiTimeTable Description: Table look-up with respect to time and linear/periodic extrapolation methods (data from matrix/file) |
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vfController |
Type: VfController Description: Voltage-Frequency-Controller |
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signalVoltage |
Type: SignalVoltage Description: Polyphase signal 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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terminalBox |
Type: TerminalBox Description: Terminal box Y/D-connection |
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aimcData |
Type: IM_SquirrelCageData Description: Induction machine data |
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gain |
Type: Gain Description: Output the product of a gain value with the input signal |
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idealGearR2T |
Type: IdealGearR2T Description: Gearbox transforming rotational into translational motion |
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mass |
Type: Mass Description: Sliding mass with inertia |
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signForce |
Type: SignForce Description: Constant force changing sign with speed |