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what is hormonics. how it is generated & what are the
problem faced by that.
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Answer Posted / saikishore.katuri
Harmonics is Integral multiple of fundamental
frequency.That means if the fundamental frequency is f, the
harmonics have frequencies f, 2f, 3f, 4f and the property
is that they are all periodic at the fundamental
frequency.The sum of harmonics also periodic at that
frequency.
If we see the generation of harmonics different order
harmonics are generated 3rd harmonics generated by AC
Generator itself,5th harmonic generated by transformer&
different order harmonics are generated by electronic
circuit like rectifier,inverter etc..
It creates many problems like in power systems are
Harmonics can cause all sort of problems Excessive Heating
in
neutral conductor,excessive eddy current loss in conductor
due to skin & proximity effect,it creates the problem in
Motor & Tranformer iron loss.It will give problem on
waveform distortion. To avoid this designing of the neutral
cable size very important.
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