Talk:Harmonics (electrical power)

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3rd Order Harmonic[edit]

I choose to edit the Harmonics (electric power) page because it lacked information on the 3rd order harmonic and why it is special when compared to other harmonics. It is modeled by the 0 sequence, and therefore each phase's 3rd order harmonic will add constructively with the other phases 3rd order harmonics. This leads to currents in the neutral wire, which can be dangerous since it is designed to carry minimal current. — Preceding unsigned comment added by Dkangell (talk • contribs) 20:05, 25 November 2015 (UTC)[reply]

Merger proposal[edit]

I propose that Power system harmonics should be merged into Harmonics (electrical power) due to significant overlap. 63.239.65.11 (talk) 16:39, 20 September 2011 (UTC)[reply]

I agree, they cover exactly the same subject... — Preceding unsigned comment added by 134.58.253.57 (talk) 19:21, 25 January 2012 (UTC)[reply]

AgreedNolween (talk) 09:14, 28 February 2012 (UTC)[reply]

AgreedPREVRAVANTH Prev Ravanth (talk) 07:09, 23 July 2012 (UTC)[reply]

Agreed — Preceding unsigned comment added by 217.15.37.211 (talk) 07:51, 4 September 2012 (UTC)[reply]

Agreed — Preceding unsigned comment added by Shineon84 (talk • contribs) 18:18, 24 November 2012 (UTC)[reply]

Agreed Car333son (talk) 04:48, 14 February 2013 (UTC)[reply]

I agree too! — Preceding unsigned comment added by 193.215.162.66 (talk) 12:56, 5 December 2013 (UTC)[reply]

Numbering of harmonics[edit]

The diagram is incorrect. Conventionally the first harmonic is the same as the fundamental. The third harmonic as referred to in the text is at three times the fundamental frequency, not four. — Preceding unsigned comment added by 86.143.93.12 (talk) 11:01, 22 February 2013 (UTC)[reply]

Agreed Kmuster (talk) 11:02, 26 November 2013 (PST)

So much so that I have taken the bull by the horns and deleted the incorrect diagram. I have also flagged the error on the file page. I B Wright (talk) 12:28, 1 December 2013 (UTC)[reply]

Voltage Harmonics[edit]

I have added to the section titled “Voltage harmonics” to better explain the effect harmonics have on real power transferred to the load. I have also provided a way to intuit the relationship harmonics have with power factor when only considering voltage at the fundamental frequency.

Total harmonic distortion[edit]

I have expanded on the section titled “Total harmonic distortion” to include the expression that depends on current, not just voltage. Also in that section I have added a full paragraph explaining the relationship both power and power factor have on total harmonic distortion.

I feel it is very unclear how this paragraph uses percentages. First when calculating THD the result is multiplied by 100%, which probably just means that the value is normally expressed in percent. Then later the THD is devided by 100 - I guess this should actually be a 100%? Anyway, the way how percentages are used is incoherent and in my view obsolete, so I would suggest to remove them from the calculation and maybe add that THD is normally communicated as a percentage. P.weigmann (talk) 18:37, 17 March 2020 (UTC)[reply]

Technicality[edit]

I tagged this article with {{technical}} mainly because it contains several obscure terms such as "sinusoidal", "rectifier" and "hysteresis" that are either explained only via links or not at all. In addition to that, much of the writing sounds almost deliberately confusing. A good example of what I am referring to is "The classic example of a non-linear load is a rectifier with a capacitor input filter, where the rectifier diode only allows current to pass to the load during the time that the applied voltage exceeds the voltage stored in the capacitor, which might be a relatively small portion of the incoming voltage cycle." in the "Sources" section. Geolodus (talk) 17:31, 14 October 2019 (UTC)[reply]