23rd January 2006, 11:04 #1
Member level 1
i am writing a code for measuring THD(total harmonic distortion) in a three phase power meter.can anyone explain what is THD and upto how many harmonics can be measured ?
i want measurement upto 41st harmonic
23rd January 2006, 11:04
23rd January 2006, 19:28 #2
Advanced Member level 2
how to calculate thd
Here's a pretty good definition of total harmonic distortion
The Fluke 430 claims to be able to track up to the 50th harmonic
23rd January 2006, 19:28
21st December 2010, 23:17 #3
Newbie level 4
Re: how to calculate thd
Originally Posted by v_c
any ideas how to do the same in Matlab ??
From the frequency response of the FFT, write a script that identifies the harmonics and calculate the THD ....
Any ideas ?