WOLFRAM SYSTEM MODELER
IMC_InverterDriveTest example: InductionMachineSquirrelCage inverter drive |
 |
Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.InductionMachines.IMC_InverterDrive"]
Out[1]:=
Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
This is a model of a complete inverter drive comprising:
- a grid model and a line choke
- a diode rectifier
- a buffer capacitor
- a switching inverter
- a pulse width modulation
- a voltage/frequency characteristic
- the reference frequency ramped up
- an induction machine with squirrel cage
- a load inertia and quadratic speed dependent load torque (like a fan or pump)
Please note: Be patient, two switching devices cause many event iterations which cost performance.
Note that due to the voltage drop the voltage at the machine can't reach the full voltage which means torque reduction.
Default machine parameters are adapted to nominal phase voltage 400 V and nominal phase current 25 A.
Parameters (10)
| VNominal |
Value: 400 Type: Voltage (V) Description: Nominal RMS voltage per phase |
|---|---|
| fNominal |
Value: 50 Type: Frequency (Hz) Description: Nominal frequency |
| RGrid |
Value: 10e-3 Type: Resistance (Ω) Description: Grid choke resistance |
| LGrid |
Value: 500e-6 Type: Inductance (H) Description: Grid choke inductance |
| VDC |
Value: factorY2DC(m) * VNominal / sqrt(3) Type: Voltage (V) Description: Theoretical DC voltage |
| CDC |
Value: 5e-3 Type: Capacitance (F) Description: DC capacitor |
| TLoad |
Value: 161.4 Type: Torque (N⋅m) Description: Nominal load torque |
| wLoad |
Value: 1440.45 * 2 * pi / 60 Type: AngularVelocity (rad/s) Description: Nominal load speed |
| JLoad |
Value: 0.29 Type: Inertia (kg⋅m²) Description: Load's moment of inertia |
| aimcData |
Value: Type: IM_SquirrelCageData Description: Induction machine data |
Components (19)
 |
sineVoltage |
Type: SineVoltage Description: Polyphase sine voltage source |
|---|---|---|
 |
star |
Type: Star Description: Star-connection |
 |
ground |
Type: Ground Description: Ground node |
 |
gridCurrent |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
 |
resistor |
Type: Resistor Description: Ideal linear electrical resistors |
 |
inductor |
Type: Inductor Description: Ideal linear electrical inductors |
 |
rectifier |
Type: DiodeBridge2mPulse Description: 2*m pulse diode rectifier bridge |
 |
capacitor |
Type: Capacitor Description: Ideal linear electrical capacitor |
 |
inverter |
Type: Polyphase2Level Description: Polyphase DC to AC converter |
|
machineCurrent |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
 |
terminalBox |
Type: TerminalBox Description: Terminal box Y/D-connection |
 |
aimc |
Type: IM_SquirrelCage Description: Induction machine with squirrel cage rotor |
 |
aimcData |
Type: IM_SquirrelCageData Description: Induction machine data |
 |
loadInertia |
Type: Inertia Description: 1D-rotational component with inertia |
 |
loadTorque |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
 |
ramp |
Type: Ramp Description: Generate ramp signal |
 |
vfController |
Type: VfController Description: Voltage-Frequency-Controller |
 |
toSpacePhasor |
Type: ToSpacePhasor Description: Conversion of polyphase instantaneous values to space phasors |
 |
pwm |
Type: PWM Description: PulseWidthModulation |