.Modelica.Electrical.Machines.Examples.DCMachines.DCPM_withLosses

Information

Test example: Investigate influence of losses on DCPM motor performance
Both motors are started with a voltage ramp applied to the armature, causing the DC machines to start, and accelerating inertias. Both machines are loading with a quadratic speed dependent load torque.
The first machine dcpm1 uses default machine parameters of model DC_PermanentMagnet, the second machine dcpm2 is parametrized with additional losses:
dcpm1 dcpm2
Armature voltage 100 100 V
Armature current 100 100 A
Inner voltage 95.0 94.5 V
Nominal speed 1425.0 1417.5 rpm
Armature resistance 0.05000 0.03864 Ohm
Temperature coefficient n/a 0.00392 1/K
Reference temperature n/a 20 degC
Operation temperature n/a 95 degC
Brush voltage drop n/a 0.5 V
Electrical input 10,000 10,000 W
Armature copper losses 500 500 W
Core losses n/a 200 W
Stray load losses n/a 50 W
Friction losses n/a 100 W
Brush losses n/a 50 W
Mechanical output 9,500 9,100 W
Nominal torque 63,66 61,30 Nm

Note: The reference values (voltage, current, speed) are already propagated to the loss records, using the nominal operation point.
See:
Anton Haumer, Christian Kral, Hansjörg Kapeller, Thomas Bäuml, Johannes V. Gragger
The AdvancedMachines Library: Loss Models for Electric Machines
Modelica 2009, 7th International Modelica Conference
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