FAQ on Armature Reaction In DC Machines
What is armature reaction in a DC machine?
Armature reaction refers to the magnetic field distortion caused by the current flowing in the armature windings of a DC machine. This distortion impacts the main magnetic field in the machine.
Does armature reaction vary with the size of the DC machine?
Yes when armature reaction is more pronounced in larger DC machines due to higher currents & larger windings. Small machines might experience negligible armature reaction compared to larger ones.
Is armature reaction always a disadvantage in DC machines?
While armature reaction poses challenges that it also offers insights for controlling motor speed which regulating generator voltage & influencing machine design for improved performance under specific conditions. Understanding and managing armature reaction are crucial for optimizing DC machine operation.
Armature Reaction In DC Machines
In DC machines the term armature reaction describes the distortion of the magnetic field brought on by the current flowing through the armature winding. The machine’s overall magnetic field is affected by the magnetic field produced by the armature as it carries electricity. The machine’s performance especially in terms of voltage regulation & commutation may be impacted by this interaction which may result in changes to the neutral plane. For DC machines to operate steadily and effectively the armature reaction needs to be taken into account and compensated for by engineers.
In a DC machine, there are two types of magnetic forces present one is the armature flux & the main field flux. When the armature flux affects the main field flux it is called an armature reaction.
Table of Content
- MNA And GNA
- Cases Armature reaction
- How to reduce Armature Reaction
- Effects of Armature Reaction
- Applications of Armature Reaction