WOLFRAM SYSTEM MODELER
SMPM_InverterTest example: PermanentMagnetSynchronousMachine with inverter |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.SynchronousMachines.SMPM_Inverter"]
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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 raised by a ramp, causing the permanent magnet synchronous machine to start, and accelerating inertias. At time tStep a load step is applied.
Simulate for 1.5 seconds and plot (versus time):
- currentQuasiRMSSensor.I: stator current RMS
- smpm.wMechanical: motor's speed
- smpm.tauElectrical: motor's torque
- rotorDisplacementAngle.rotorDisplacementAngle: rotor displacement angle
Default machine parameters are used.
In practice it is nearly impossible to drive a PMSMD without current controller.
Parameters (8)
| VNominal |
Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase |
|---|---|
| fNominal |
Value: 50 Type: Frequency (Hz) Description: Nominal frequency |
| f |
Value: 50 Type: Frequency (Hz) Description: Actual frequency |
| tRamp |
Value: 1 Type: Time (s) Description: Frequency ramp |
| TLoad |
Value: 181.4 Type: Torque (N⋅m) Description: Nominal load torque |
| tStep |
Value: 1.2 Type: Time (s) Description: Time of load torque step |
| JLoad |
Value: 0.29 Type: Inertia (kg⋅m²) Description: Load's moment of inertia |
| smpmData |
Value: Type: SM_PermanentMagnetData Description: Synchronous machine data |
Components (12)
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smpm |
Type: SM_PermanentMagnet Description: Permanent magnet synchronous machine |
|---|---|---|
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currentQuasiRMSSensor |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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rotorDisplacementAngle |
Type: RotorDisplacementAngle Description: Rotor lagging angle |
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ramp |
Type: Ramp Description: Generate ramp signal |
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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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loadInertia |
Type: Inertia Description: 1D-rotational component with inertia |
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loadTorqueStep |
Type: TorqueStep Description: Constant torque, not dependent on speed |
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terminalBox |
Type: TerminalBox Description: Terminal box Y/D-connection |
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smpmData |
Type: SM_PermanentMagnetData Description: Synchronous machine data |