WOLFRAM SYSTEMMODELER

DCSE_Start

Test example: DC with serial excitation starting with voltage ramp

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 resistor
At 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
Default machine parameters of model DC_SeriesExcited are used.

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:

Components (8)

dcse

Type: DC_SeriesExcited

Description:

ramp

Type: Ramp

Description:

constantVoltage

Type: ConstantVoltage

Description:

ground

Type: Ground

Description:

loadInertia

Type: Inertia

Description:

quadraticLoadTorque

Type: QuadraticSpeedDependentTorque

Description:

variableResistor

Type: VariableResistor

Description:

dcseData

Type: DcSeriesExcitedData

Description: