WOLFRAM SYSTEMMODELER

SMPM_Braking

Test example: PermanentMagnetSynchronousInductionMachine acting as brake

Diagram

Wolfram Language

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SystemModel["Modelica.Electrical.Machines.Examples.SynchronousInductionMachines.SMPM_Braking"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

A synchronous induction machine with permanent magnets starts braking from nominal speed by feeding a diode bridge, which in turn feeds a braking resistor.
Since induced voltage is reduced proportional to falling speed, the braking resistance is set proportional to speed to achieve constant current and torque.

Default machine parameters of model SM_PermanentMagnet are used.

Parameters (4)

R

Value: 1

Type: Resistance (Ω)

Description: Nominal braking resistance

wNominal

Value: 2 * pi * smpmData.fsNominal / smpmData.p

Type: AngularVelocity (rad/s)

Description: Nominal speed

JLoad

Value: 0.29

Type: Inertia (kg·m²)

Description: Load's moment of inertia

smpmData

Value:

Type: SM_PermanentMagnetData

Description:

Components (15)

smpm

Type: SM_PermanentMagnet

Description:

ground

Type: Ground

Description:

terminalBox

Type: TerminalBox

Description:

inertiaLoad

Type: Inertia

Description:

speedSensor

Type: SpeedSensor

Description:

smpmData

Type: SM_PermanentMagnetData

Description:

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

Description:

diodeBridge2mPulse

Type: DiodeBridge2mPulse

Description:

variableResistor

Type: VariableResistor

Description:

gain

Type: Gain

Description:

limiter

Type: Limiter

Description:

ac2dc

Type: Gain

Description:

starM

Type: Star

Description:

voltageQuasiRMSSensor

Type: VoltageQuasiRMSSensor

Description:

grounding

Type: Resistor

Description: