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When the rotor speed, in a synchronous machine becomes more than the synchronous speed during hunting, the damper boars develop
- a)Induction motor torque
- b)Induction generator torque
- c)Synchronous motor torque
- d)DC motor torque
Correct answer is option 'B'. Can you explain this answer?
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Verified Answer
When the rotor speed, in a synchronous machine becomes more than the s...
"Hunting is the phenomenon of the synchronous machines which oscillates at about its new equilibrium position" means the synchronous machines rotates at otherthan synchronous speed.
1) If speed is more than Ns, Induction generator torque will be produced opposite direction to synchronous machine torque such that speed becomes nearer to synchronous speed.
2) If speed is less than Ns, Induction motor torque will be produced in the same direction of synchronous machine torque such that speed becomes nearer to synchronous speed(Ns).
Most Upvoted Answer
When the rotor speed, in a synchronous machine becomes more than the s...
Damper Bars in a Synchronous Machine
Damper bars are used in synchronous machines to damp out the oscillations during the transient period. When the rotor speed in a synchronous machine becomes more than the synchronous speed during hunting, the damper bars develop induction generator torque.
Induction Generator Torque
Induction generator torque is developed due to the relative motion between the rotor and the stator magnetic fields. This torque opposes the motion of the rotor and helps to slow down the rotor speed. The induction generator torque is directly proportional to the slip frequency and the number of damper bars.
Synchronous Machine Hunting
Synchronous machine hunting is an undesirable condition that occurs when the rotor speed of a synchronous machine oscillates around the synchronous speed. This condition can cause significant damage to the machine if it is not controlled.
Damper Bars and Hunting
Damper bars are used in synchronous machines to damp out the oscillations during the transient period. In the presence of a small amount of hunting, the damper bars will generate induction generator torque to slow down the rotor speed and bring it back to the synchronous speed.
Conclusion
In conclusion, when the rotor speed in a synchronous machine becomes more than the synchronous speed during hunting, the damper bars develop induction generator torque. This torque helps to slow down the rotor speed and bring it back to the synchronous speed.
Damper bars are used in synchronous machines to damp out the oscillations during the transient period. When the rotor speed in a synchronous machine becomes more than the synchronous speed during hunting, the damper bars develop induction generator torque.
Induction Generator Torque
Induction generator torque is developed due to the relative motion between the rotor and the stator magnetic fields. This torque opposes the motion of the rotor and helps to slow down the rotor speed. The induction generator torque is directly proportional to the slip frequency and the number of damper bars.
Synchronous Machine Hunting
Synchronous machine hunting is an undesirable condition that occurs when the rotor speed of a synchronous machine oscillates around the synchronous speed. This condition can cause significant damage to the machine if it is not controlled.
Damper Bars and Hunting
Damper bars are used in synchronous machines to damp out the oscillations during the transient period. In the presence of a small amount of hunting, the damper bars will generate induction generator torque to slow down the rotor speed and bring it back to the synchronous speed.
Conclusion
In conclusion, when the rotor speed in a synchronous machine becomes more than the synchronous speed during hunting, the damper bars develop induction generator torque. This torque helps to slow down the rotor speed and bring it back to the synchronous speed.
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When the rotor speed, in a synchronous machine becomes more than the synchronous speed during hunting, the damper boars developa)Induction motor torqueb)Induction generator torquec)Synchronous motor torqued)DC motor torqueCorrect answer is option 'B'. Can you explain this answer?
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