.Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_PermanentMagnet .Modelica.Electrical.Machines.BasicMachines.DCMachines.DC_PermanentMagnetModel of a DC Machine with permanent magnets.
Armature resistance and inductance are modeled directly after the armature pins, then using a AirGapDC model. Permanent magnet excitation is modelled by a constant equivalent excitation current feeding AirGapDC. The machine models take the following loss effects into account:
No saturation is modelled.
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 speed | 1425 | rpm |
| nominal torque | 63.66 | Nm |
| nominal mechanical output | 9.5 | kW |
| efficiency | 95.0 | % |
| armature resistance | 0.05 | Ohm at reference temperature |
| reference temperature TaRef | 20 | °C |
| temperature coefficient alpha20a | 0 | 1/K |
| armature inductance | 0.0015 | H |
| armature nominal temperature TaNominal | 20 | °C |
| armature operational temperature TaOperational | 20 | °C |