WOLFRAM SYSTEM MODELER

DCPM_Temperature

Test example: Investigate temperature dependency of a DCPM motor

Diagram

Wolfram Language

In[1]:=
SystemModel["Modelica.Electrical.Machines.Examples.DCMachines.DCPM_Temperature"]
Out[1]:=

Information

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

Test example: Investigate influence of armature temperature on a DCPM motor
The motor starts at no-load speed, then a load step is applied.
Beginning with the load step, the armature temperature rises exponentially from 20 degC to 80 degC.
Simulate for 3 seconds and plot (versus time):
  • dcpm.ia: armature current
  • dcpm.wMechanical: motor's speed
  • dcpm.tauElectrical: motor's torque
  • thermalAmbientDCPM.Q_flow_a: motor's armature losses
Default machine parameters are used, but:
  • The armature winding material is set to Copper.
  • Armature reference temperature is set to 80 degC.
  • Nominal armature temperature is set to 80 degC.
So the machine is at the beginning in cold condition, ending in warm condition (with the same armature resistance as the unmodified machine).

Parameters (6)

Va

Value: 100

Type: Voltage (V)

Description: Actual armature voltage
Ve

Value: 100

Type: Voltage (V)

Description: Actual excitation voltage
w0

Value: Modelica.Units.Conversions.from_rpm(1500)

Type: AngularVelocity (rad/s)

Description: No-load speed
TLoad

Value: 63.66

Type: Torque (N⋅m)

Description: Nominal load torque
JLoad

Value: 0.15

Type: Inertia (kg⋅m²)

Description: Load's moment of inertia
dcpmData

Value:

Type: DcPermanentMagnetData

Description: DC machine data

Components (9)

dcpm

Type: DC_PermanentMagnet

Description: Permanent magnet DC machine
armatureVoltage

Type: ConstantVoltage

Description: Source for constant voltage
groundArmature

Type: Ground

Description: Ground node
loadInertia

Type: Inertia

Description: 1D-rotational component with inertia
loadTorque

Type: TorqueStep

Description: Constant torque, not dependent on speed
thermalAmbientDCPM

Type: ThermalAmbientDCPM

Description: Thermal ambient for DC machine with permanent magnets
exponential

Type: Exponentials

Description: Generate a rising and falling exponential signal
const

Type: Constant

Description: Generate constant signal of type Real
dcpmData

Type: DcPermanentMagnetData

Description: DC machine data