How Does Armature Reaction Occur?

How Does Armature Reaction Occur?
Armature reaction is the shift in the magnetic axis created by the distortion of the magnetic field produced by the field pole winding by that of the armature winding as shown below. It can cause sparking of the brushes and may be overcome through the use of either or both interpole and compensating windings.

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In this manner, what is armature reaction explain?

Definition: The armature reaction simply shows the effect of armature field on the main field. In other words, the armature reaction represents the impact of the armature flux on the main field flux. The armature field is produced by the armature conductors when current flows through them.

Also, how does a armature work? The armature takes the place of the nail in an electric motor. The armature is an electromagnet made by coiling thin wire around two or more poles of a metal core. The armature has an axle, and the commutator is attached to the axle. These plates provide the two connections for the coil of the electromagnet.

In this regard, how does an armature generate current?

In the armature, an electromotive force is created by the relative motion of the armature and the field. When the machine is used as a generator, the armature EMF drives the armature current, and the shaft's movement is converted to electrical power. In an induction generator, generated power is drawn from the stator.

How do you stop an armature reaction?

To eliminate armature or rotor reaction or leakage flux (leakage reactance) in an electric rotating machine, a short-circuit coil winding is wound on and through the rotor or an armature core of the machine. The short-circuit coil winding is wound at a right angle to the main coil to exclude any intervention.

Related Question Answers

What is Demagnetising effect?

Armature reaction has two undesirable effects, either it distorts the main field, or it reduces the main field flux (or both). When the main field gets distorted, it is known as a cross magnetizing effect. And when the main field flux gets reduced, it is known as the demagnetizing effect.

What is commutator function?

Function of commutator: To keep the torque on a DC motor from reversing every time the coil moves through the plane perpendicular to the magnetic field, a split-ring device called a commutator is used to reverse the current at that point.
James H. Sterling
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James H. Sterling

James Sterling reports on renewable energy developments, climate policy, ecological conservation, and green tech innovations around the globe.