I know one formula (attached for reference) which is used to calculate THD. where it is completely independent of harmonic order, it just uses the angles generated by then using SHE equations. so is there any THD formula which uses harmonic order too.?
Dear Shrinivas, the definition of THD is depended at your field of activity. In power electronics only are used the relative fundamental content.
For the THD of voltage and current in power systems refer to eqn (1) and (2) of this paper.
https://www.researchgate.net/publication/261999653_Study_of_Load_Side_Harmonics_Sources_Effects_and_Elimination
Hope this helps.
Conference Paper Study of Load Side Harmonics Sources Effects and Elimination
The THD is calculated by formulas which depend on the harmonic order. These formulas are given in many power electronics text books and references. As an example "Power Electronics by Muhammad H. Rashid".
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