WOLFRAM SYSTEMMODELER

SMPM_Braking

Test example: PermanentMagnetSynchronousInductionMachine acting as brake

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Magnetic.FundamentalWave.Examples.BasicMachines.SMPM_Braking"]
Out[1]:=

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 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

Components (15)

smpm

Type: SM_PermanentMagnet

ground

Type: Ground

terminalBox

Type: TerminalBox

inertiaLoad

Type: Inertia

speedSensor

Type: SpeedSensor

smpmData

Type: SM_PermanentMagnetData

currentQuasiRMSSensor

Type: CurrentQuasiRMSSensor

diodeBridge2mPulse

Type: DiodeBridge2mPulse

variableResistor

Type: VariableResistor

gain

Type: Gain

limiter

Type: Limiter

ac2dc

Type: Gain

starM

Type: Star

voltageQuasiRMSSensor

Type: VoltageQuasiRMSSensor

grounding

Type: Resistor