Interested to Buy Any Domain ? << Click Here >> for more details...
How damper winding in synchronous motor suppress Hunting?
- 2 Answers
- 26042 Views
- Bhel, I also Faced
- E-Mail Answers
Answer Posted / iamdon
In synchronous machines, the damper winding is placed on
pole face of rotor which is short circuited at end.
When load on machine is suddenly changed, the rotor starts
oscillating (due to its inertia )about the new equilibrium
point.However the oscillation finally dies out because of
presence of damper winding.The oscillation is called
hunting.
During hunting,there is a relative motion between rotor
(damper winding)and synchronously rotating magnetic field.
So emf induces in the damper winding as per Faraday's law
and current flows in accordance with Lenz's law as long as
the relative motion exists.As we know,the effect will
always oppose the cause.Here effect is induced current in
damper winding and cause is relative motion.So induced
torque in damper winding acts in opposition to
instantaneous relative motion.
Author:arbelectbit@yahoo.com
| Is This Answer Correct ? | 139 Yes | 11 No |
Post New Answer View All Answers
how much LT load can bear by the 100 KW HT connection.
what is meant by impulse voltage?
The series field winding has low resistance while the shunt field winding has high resistance. Why?
Why the cores of large transformers build up of circular cross section?
What is icu and ics in Acb and how many time icu or ics passes from breaker?
How the PF control while running DG set with load
What is the automatic voltage regulator with servomotor?
How to test REF relay testing for LV panel as per Kahramaa standard?
what are the disadvantages in GIS over AIS
In ACS 1000 drive we are using 12 pulse converter,why don't use 3 pulse converter.
how to select diiferent power transformers of same capacity on no load loss and full load loss by economical point of view.?
how to determine the inrush current of a transformer
WHAT IS THE TECHNICAL SPECIFICATION OF C CURVE & D CURVE LEGRAND MAKE MCB
Difference between drift current and diffusion current?
why we have and use 3 phase not 2 or 4 or other in power system?
