WOLFRAM SYSTEM MODELER
IMS_Start_PolyphaseStarting of polyphase induction machine with slip rings |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.InductionMachines.ComparisonPolyphase.IMS_Start_Polyphase"]
Out[1]:=
Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
At start time tOn voltages are supplied to the
induction machines with sliprings.
The two machine start from standstill, accelerating inertias against load torque quadratic dependent on speed,
using a starting resistance. At time tRheostat external rotor resistance is shortened, finally reaching nominal speed. Two equivalent machines with different numbers of phases are compared and their equal behavior is demonstrated.
Simulate for 1.5 seconds and plot (versus time):
aimcM|M3.tauElectrical: machine torqueaimsM|M3.wMechanical: machine speedfeedback.y: zero since difference of three-phase current phasor and scaled polyphase current phasor are equal
Parameters (11)
| m |
Value: 5 Type: Integer Description: Number of stator phases |
|---|---|
| mr |
Value: 5 Type: Integer Description: Number of rotor phases |
| VsNominal |
Value: 100 Type: Voltage (V) Description: Nominal RMS voltage per phase |
| fNominal |
Value: aimsData.fsNominal Type: Frequency (Hz) Description: Nominal frequency |
| tOn |
Value: 0.1 Type: Time (s) Description: Start time of machine |
| RStart |
Value: 0.16 / aimsData.turnsRatio ^ 2 Type: Resistance (Ω) Description: Starting resistance |
| tRheostat |
Value: 1.0 Type: Time (s) Description: Time of shortening the rheostat |
| T_Load |
Value: 161.4 Type: Torque (N⋅m) Description: Nominal load torque |
| w_Load |
Value: Modelica.Units.Conversions.from_rpm(1440.45) Type: AngularVelocity (rad/s) Description: Nominal load speed |
| J_Load |
Value: 0.29 Type: Inertia (kg⋅m²) Description: Load inertia |
| aimsData |
Value: Type: IM_SlipRingData Description: Induction machine data |
Components (25)
 |
terminalBoxM |
Type: TerminalBox Description: Terminal box Y/D-connection |
|---|---|---|
|
terminalBox3 |
Type: TerminalBox Description: Terminal box Y/D-connection |
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aimsM |
Type: IM_SlipRing Description: Induction machine with slip ring rotor |
|
aims3 |
Type: IM_SlipRing Description: Induction machine with slip ring rotor |
 |
rheostatM |
Type: SwitchedRheostat Description: Rheostat which is shortened after a given time |
|
rheostat3 |
Type: SwitchedRheostat Description: Rheostat which is shortened after a given time |
 |
loadInertiaM |
Type: Inertia Description: 1D-rotational component with inertia |
|
loadInertia3 |
Type: Inertia Description: 1D-rotational component with inertia |
 |
quadraticLoadTorqueM |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
|
quadraticLoadTorque3 |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
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aimsData |
Type: IM_SlipRingData Description: Induction machine data |
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groundM |
Type: Ground Description: Ground node |
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starM |
Type: Star Description: Star-connection |
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sineVoltageM |
Type: SineVoltage Description: Polyphase sine voltage source |
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idealCloserM |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
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booleanStepM |
Type: BooleanStep[m] Description: Generate step signal of type Boolean |
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currentRMSsensorM |
Type: CurrentQuasiRMSSensor Description: Continuous quasi current RMS sensor for polyphase system |
|
ground3 |
Type: Ground Description: Ground node |
|
star3 |
Type: Star Description: Star-connection |
|
sineVoltage3 |
Type: SineVoltage Description: Polyphase sine voltage source |
|
idealCloser3 |
Type: IdealClosingSwitch Description: Polyphase ideal closer |
|
booleanStep3 |
Type: BooleanStep[m3] Description: Generate step signal of type Boolean |
 |
currentRMSsensor3 |
Type: CurrentQuasiRMSSensor Description: Length of space phasor -> RMS current |
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gain |
Type: Gain Description: Output the product of a gain value with the input signal |
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feedback |
Type: Feedback Description: Output difference between commanded and feedback input |