Inalternator,whether it is possible to bring rotor in synchronism with stator at low sync speed without damper

Question

suppose synchronous speed is 600rpm whether dc excitation is enough to bring rotor into magnetic locking without damper winding

Answer 1

If you're talking about a car alternator, most need something to "kick start" it. It's because they depend on the current in the rotor to create the magnetic field. Most alternators don't have built in magnets. If you try to push start a car with a completely dead battery, the alternator won't produce any electricity. You need power from the battery to get the magnetic field going. The stator windings supply the power from the alternator. A DC current in the rotor creates a magnetic field. When this magnetic field rotates, it produces an AC current in the stator windings.