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david90
- 312
- 2
In a field loss event, why does a shunt wound dc motor run away? From my understand of electric motor, the armature spins because it's magnetic field pushes/pulls against the field winding's magnetic field. If I remove power to the field winding, then shouldn't the motor slows down because the armature's magnetic field has nothing to pushes/pulls against? Isn't like a permanent magnet motor running without the magnets?