WOLFRAM SYSTEM MODELER
DCSE_StartTest example: DC with serial excitation starting with voltage ramp |
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Diagram
Wolfram Language
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SystemModel["Modelica.Electrical.Machines.Examples.DCMachines.DCSE_Start"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Test example: Series excited DC machine started with a series resistorAt constant source voltage, a series resistor limiting the armature current, is reduced according to a ramp, causing the DC machine to start, and accelerating inertias against load torque quadratic dependent on speed, finally reaching nominal speed.
Simulate for 2 seconds and plot (versus time):
- dcse.ia: armature current
- dcse.wMechanical: motor's speed
- dcse.tauElectrical: motor's torque
Parameters (7)
| Va |
Value: 100 Type: Voltage (V) Description: Actual armature voltage |
|---|---|
| tStart |
Value: 0.1 Type: Time (s) Description: Start of resistance ramp |
| tRamp |
Value: 0.9 Type: Time (s) Description: Resistance ramp |
| TLoad |
Value: 63.66 Type: Torque (N⋅m) Description: Nominal load torque |
| wLoad |
Value: 1410 * 2 * Modelica.Constants.pi / 60 Type: AngularVelocity (rad/s) Description: Nominal load speed |
| JLoad |
Value: 0.15 Type: Inertia (kg⋅m²) Description: Load's moment of inertia |
| dcseData |
Value: Type: DcSeriesExcitedData Description: DC machine data |
Components (8)
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dcse |
Type: DC_SeriesExcited Description: Series excited linear DC machine |
|---|---|---|
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ramp |
Type: Ramp Description: Generate ramp signal |
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constantVoltage |
Type: ConstantVoltage Description: Source for constant voltage |
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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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quadraticLoadTorque |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
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variableResistor |
Type: VariableResistor Description: Ideal linear electrical resistor with variable resistance |
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dcseData |
Type: DcSeriesExcitedData Description: DC machine data |