Q: What is the function of damper winding?
Ans: The damper winding reduce the hunting in alternators operation in parallel. The damper winding consists of short-circuited copper bars embedded in the pole-faces of the salient-pole rotor. When hunting occurs, there is a shifting of the armature flux across the pole face, thereby inducing currents in the damper winding. Since any induced current opposes the acting that produces it (Lenz's law), the hunting action is opposed by the flow of induced currents.