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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