The Stability windings in a 3 phase AC generator are to sense
- field oscillations.
- overvolt.
- phase shift.
Afshinarabi asking:
he stability windings (often called damping or amortisseur windings) in a 3-phase AC generator are primarily designed to dampen mechanical rotor oscillations and stabilize the machine. They do not actively "sense" overvoltages or phase shifts; those conditions are monitored by external protection relays.
Community Comments (1)
T
Tomash Posts: 3 20.05.2026 / 13:45
Should be A. When we chase a hunting fault on an IDG it is almost always a damper-winding issue, that is what they are there for, damping field oscillations on a synchronous machine. Overvolt and phase shift are GCU and protection-relay territory, never the rotor winding.
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