What is harmonics in AC waves. How it is generated? How it
will effect the system network? how can eliminate it?

Answer Posted / iamdon

The integral multiple frequency components superimposed on
fundamental components is called harmonics.

It is generated due to switching action,power electronics
devies(static compensator,rectifiers) used in power
system,Arc furnace etc...

Due to harmonics
1)Resonance occur between inductive and capacitive parts of
circuit.It is dangerous.
2)Harmonics cause the interference with neighbouring
telecommmunication circuit and computer traffic.
3)Incresed loss in machines=>temp rise=>insulation failure.

Use of filter can solve the harmonics to some extent.

Author:arbelectbit@yahoo.com

Is This Answer Correct ?    6 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

solar energy light efficiency & disadvantages?

1571


what is the eight bit unit?

1975


How we can come to know the substation range,without go through any name plate ?

1501


What is difference between insulating medium and fault current interruption medium in a switching device.

1114


How to calculate the phase to phase clearness of HT /// LT bus bar?????

1602






upto how much low RPM we will run the commercial motor which is run through VFD without any problem occurs in motor.Motor rating Duty is S1 & RPM is 1400.

1640


What is maximum power transfer theorem?

651


why Induction Generators are not "Black start" ? and apart from WTGs where this types of generator are generally used?

2225


Where is the best place to mount  distribution panel in a house.

1638


Explain what are inter-poles and why they are required in a dc machine.

641


In AC if the direction of current keeps reversing every half cycle, how does it propogate through the transmission lines?

1648


EXPLAIN THE ESSENTIAL FACTORS WHICH INFLUENCES THE CHOICE OF SITE FOR A HYDRO ELECTRIC POWER PLANT

1562


explain the types of drives

1563


if in 3-phase system voltage=440V,frequency=60Hz, current=400A. then if it is single phase then current=? and if it is single phasing then current=?

2131


What is the use of iron core in a transformer?

649