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Harmonics In Pfc


Vivek01

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Hi, I am new to this forum...

At one of our site, initial current harmonics are 36% and voltage harmonics are 6%.

We decided to put 7% reactor in series with capacitors.

But we observed that after putting reactor in picture harmonics level in current increase to 86%.

How this can happens?

Please reply as we are facing same problem at some sites?

 

 

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Hi, I am new to this forum...

At one of our site, initial current harmonics are 36% and voltage harmonics are 6%.

We decided to put 7% reactor in series with capacitors.

But we observed that after putting reactor in picture harmonics level in current increase to 86%.

How this can happens?

Please reply as we are facing same problem at some sites?

 

 

Without more data, I suspect that the 7% reactor has created a resonance which resulted in the increased current.

 

Q. Was a harmonic analysis performed ? Probably not.

 

Q. What is the power factor ?

 

Q. How much capacitance on the mains or branches for power factor correction ?

 

 

Solution to your problem can be found by performing a proper Harmonic Analysis of

 

your power system ..

 

 

 

 

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