WOLFRAM SYSTEM MODELER
DCPM_CurrentControlledTest example: DC with permanent magnet starting with current controller |
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Diagram
Wolfram Language
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SystemModel["Modelica.Electrical.Machines.Examples.DCMachines.DCPM_CurrentControlled"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Test example: Permanent magnet DC machine started with current controllerThe current controller is parameterized according to absolute optimum. At time 0.1 s a reference current step with height = nominal armature current is applied, causing the DC machine to start, and accelerating inertias.
The machine is loaded by a quadratic speed dependent load torque.
Simulate for 2 seconds and plot (versus time):
- dcpm.ia: armature current
- dcpm.wMechanical: motor's speed
- dcpm.tauElectrical: motor's torque
Parameters (11)
| TLoad |
Value: ViNominal * dcpmData.IaNominal / dcpmData.wNominal Type: Torque (N⋅m) Description: Nominal load torque |
|---|---|
| wLoad |
Value: dcpmData.wNominal Type: AngularVelocity (rad/s) Description: Nominal load torque |
| JLoad |
Value: dcpmData.Jr Type: Inertia (kg⋅m²) Description: Load's moment of inertia |
| Ra |
Value: Modelica.Electrical.Machines.Thermal.convertResistance(dcpmData.Ra, dcpmData.TaRef, dcpmData.alpha20a, dcpmData.TaNominal) Type: Resistance (Ω) Description: Warm armature resistance |
| ViNominal |
Value: dcpmData.VaNominal - Ra * dcpmData.IaNominal Type: Voltage (V) Description: Nominal induced voltage |
| Ta |
Value: dcpmData.La / Ra Type: Time (s) Description: Armature time constant |
| Ts |
Value: 1e-3 Type: Time (s) Description: Dead time of inverter |
| k |
Value: Ra * Ta / (2 * Ts) Type: Resistance (Ω) Description: Current controller proportional gain |
| Ti |
Value: Ta Type: Time (s) Description: Current controller integral time constant |
| kPhi |
Value: ViNominal / dcpmData.wNominal Type: MagneticFlux (Wb) Description: Voltage constant |
| dcpmData |
Value: Type: DcPermanentMagnetData Description: DC machine data |
Components (11)
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dcpm |
Type: DC_PermanentMagnet Description: Permanent magnet DC machine |
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step |
Type: Step Description: Generate step signal of type Real |
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signalVoltage |
Type: SignalVoltage Description: Generic voltage source using the input signal as source 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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loadTorque |
Type: QuadraticSpeedDependentTorque Description: Quadratic dependency of torque versus speed |
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dcpmData |
Type: DcPermanentMagnetData Description: DC machine data |
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currentSensor |
Type: CurrentSensor Description: Sensor to measure the current in a branch |
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speedSensor |
Type: SpeedSensor Description: Ideal sensor to measure the absolute flange angular velocity |
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firstOrder |
Type: FirstOrder Description: First order transfer function block (= 1 pole) |
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PID |
Type: LimPID Description: P, PI, PD, and PID controller with limited output, anti-windup compensation, setpoint weighting and optional feed-forward |