## Voted Best Answer

Apr 08, 2015 - 09:31 AM

There are two methods to eliminate specific harmonic frequency:

1) using SHE (Selective Harmonic Elemination) PWM to fire your IGBT/GTO. You can go through any power electronics book as a reference.

2) use of filters (selecting proper filters and components like high pass, low pass, band pass, c-type) e.g.

for a 2nd order high pass filter

Cfilter = (h^2 - 1)* Quality factor/(h^2 * MVA* line to line voltage)

Lfilter = 1/(Cfilter * MVA^2 *voltage^2)

Rfilter = quality factor * sqrt (Lfilter/Cfilter)

where h is harmonic number

quality factor 0.5% to 5%

1) using SHE (Selective Harmonic Elemination) PWM to fire your IGBT/GTO. You can go through any power electronics book as a reference.

2) use of filters (selecting proper filters and components like high pass, low pass, band pass, c-type) e.g.

for a 2nd order high pass filter

Cfilter = (h^2 - 1)* Quality factor/(h^2 * MVA* line to line voltage)

Lfilter = 1/(Cfilter * MVA^2 *voltage^2)

Rfilter = quality factor * sqrt (Lfilter/Cfilter)

where h is harmonic number

quality factor 0.5% to 5%

By

I have the same problem Please if you solve it share it. or Also share your model I would like to see and figure out.

By

Hasan if you have time please take a look in ur facebook inbox. Thank you for your comment...

Add New Comment