.Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_ElectricalExcited .Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_ElectricalExcitedModel of a DC Machine with electrical shunt or separate excitation.
Armature resistance and inductance are modeled directly after the armature pins, then using a AirGapDC model.
The machine models take the following loss effects into account:
No saturation is modelled.
Shunt or separate excitation is defined by the user's external circuit.
Default values for machine's parameters (a realistic example) are:
| stator's moment of inertia | 0.29 | kg.m2 |
| rotor's moment of inertia | 0.15 | kg.m2 |
| nominal armature voltage | 100 | V |
| nominal armature current | 100 | A |
| nominal torque | 63.66 | Nm |
| nominal speed | 1425 | rpm |
| nominal mechanical output | 9.5 | kW |
| efficiency | 95.0 | % only armature |
| efficiency | 94.06 | % including excitation |
| armature resistance | 0.05 | Ohm at reference temperature |
| reference temperature TaRef | 20 | °C |
| temperature coefficient alpha20a | 0 | 1/K |
| armature inductance | 0.0015 | H |
| nominal excitation voltage | 100 | V |
| nominal excitation current | 1 | A |
| excitation resistance | 100 | Ohm at reference temperature |
| reference temperature TeRef | 20 | °C |
| temperature coefficient alpha20e | 0 | 1/K |
| excitation inductance | 1 | H |
| stray part of excitation inductance | 0 | |
| armature nominal temperature TaNominal | 20 | °C |
| armature operational temperature TaOperational | 20 | °C |
| (shunt) excitation operational temperature TeOperational | 20 | °C |