modelDCSE_Start
Test example: DC with serial excitation starting with voltage ramp
Extends from Modelica.Icons.Example (Icon for runnable examples).
Information
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
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Voltage | Va | 100 | Actual armature voltage |
| SI.Time | tStart | 0.1 | Start of resistance ramp |
| SI.Time | tRamp | 0.9 | Resistance ramp |
| SI.Torque | TLoad | 63.66 | Nominal load torque |
| SI.AngularVelocity | wLoad | 1410*2*Modelica.Constants.pi/60 | Nominal load speed |
| SI.Inertia | JLoad | 0.15 | Load's moment of inertia |
| Utilities.ParameterRecords.DcSeriesExcitedData | dcseData | DC machine data |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Machines.BasicMachines.DCMachines.DC_SeriesExcited | dcse | ||
| Modelica.Blocks.Sources.Ramp | ramp | ||
| Modelica.Electrical.Analog.Sources.ConstantVoltage | constantVoltage | ||
| Modelica.Electrical.Analog.Basic.Ground | ground | ||
| Modelica.Mechanics.Rotational.Components.Inertia | loadInertia | ||
| Modelica.Mechanics.Rotational.Sources.QuadraticSpeedDependentTorque | quadraticLoadTorque | ||
| Modelica.Electrical.Analog.Basic.VariableResistor | variableResistor |