Talk:Rotary phase converter

message: The list of commercial phase converter manufacturers simply bounces back to this page.  I am a newbie here and a little hesitant to edit other folks works.
In addition I am not sure how to unlink the "List of commercial phase converter manufacturers" and make it its own page.
There is one commercial company still listing in this page and some of the links go to highly commercial places.  I sould like to see the List of commercial phase converter manufacturers recreated as a list. --Ottojas 21:11, 9 February 2007 (UTC)
replies: text: I agree that a list is useful.  I removed the redirect and started a basic list of RPC companies alphabetically by type manufactured.  I personally think including a list of mfg links on this page (Rotary Phase Converter) is fine as long as we define it that way.  Several of these sites have really good advanced general and technical information on them, in addition to selling a product.  We can keep it as a separate page for now and maybe we will get some feedback to re-instate it here instead? --Theodore1942 10:17, 1 March 2007 (UTC)
thread_title: list of commercial phase converter manufacturers

message: Would anyone please review the Rotary phase converter page.
I am hesitant to do any of the changes necessary to this page without some support.  As a newbie I would like advice and as a person with commercial interests in a related area I do not want to be biased or exposed to charges of bias.
The issues.
* 1.  Rotary converter covers the subject in a less biased manner.  Rotary phase converter is redundant since it is simply a species of rotary converter.  Would the additional information fit better under Rotary converter?
* 2.  Rotary phase converter is full of value statements that have to do with a particular manufacturer --such as-- "The best types of RPC use actual three phase generators" a statement which would be difficult if not impossible to validate:  The best in what sense??  Horsepower/dollar??  Voltage balance at full load??  Best for my application??
The generator claim is one also made by American Rotary, which is the commercial company you get when you click on the external link "Parts For Building a Phase Converter".  It should at least be supported by some sort of reference to literature.  I have never seen this claim made in a technical article.
* 3.  The link to "article on power factor" goes to an "organization", every page of which is an ad for "PhasePerfect", another manufacturer.
The link to "List of commercial phase converter manufacturers" which was apparently added by a generous wikipedian to give these folks a place to post, is a redirect back to the Rotary phase converter page.
* 4.  The article is full of odd verbiage.. "The quality of three phase power generated by such a phase converter may or may not be satisfactory," and "Besides RPCs (the most popular technology used to convert phase), there are other technologies available today that may or may not perform as well as this proven technology."  
The page was likely built by a rotary phase converter manufacturer as evidenced by the external links and the arguments for what is the "best" technology.
I am tempted to edit this article but am held back by the above considerations and questions. Should Rotary phase converter exist at all or just be an expansion of the Rotary converter article?  There is very little real information in the article although it does contain some good links to "how to build your own" style articles.
Is anyone interested in this matter and willing to take a look at the page?  I would be happy to make changes if they were vetted first.  Better yet would someone else, clearly unbiased, become interested and do some of the editing.  If I make changes, should I post a request here or elsewhere to get them reviewed and edited?
Thanks --Ottojas 03:15, 22 February 2007 (UTC)
replies: text: I've had a read through and made some (minor) alterations but I have no serious criticism to make. Largely the article seems a lot better than your RfC led me to expect. To improve it further, I would suggest adding inline references (to non-commercial sources), and putting in links to other Wikipedia electrical or engineering articles. Good luck! SheffieldSteel 19:43, 7 March 2007 (UTC)
thread_title: A request for other folks to review this page

message: Domain names: PHASEPERFECT.COM, PHASECONVERTERINFO.COM
Both have the same registrant and administrative contact:
Registrant: Make this info private
: Phase Technologies LLC, 1141 Rand Rd, Rapid City, SD 57702, US
Administrative Contact:  ruthjensen@rushmore.com
: Phase Technologies LLC, 1141 Rand Rd, Rapid City, SD 57702, US
: Phone: (605) 343-7934, Fax: 605-343-7943
--Ottojas 23:36, 1 March 2007 (UTC)
thread_title:  PhasePerfect and Phaseconverterinfo are the same: 

message: The term rotary converter is broad in its use and can refer to any number of electrical machines. But in the classical sense it has always described the synchronous rotary converter. The synchronous converter was a device that resembled a DC dynamo but had slip rings in addition to the commutator for AC power input. It could turn AC current into DC or vice versa. It is not a motor generator set or rotary phase converter. I know it is confusing but all of my classic electrical literature refers to the synchronous rotary converter simply as a rotary converter.
I will remove all links to rotary converter and change term to rotating electrical machine where necessary. Thaddeusw (talk) 23:43, 16 July 2009 (UTC)
thread_title: Removal of rotary converter links

message: Do we have a source for their invention and inventor?  At present it's getting added to Hungarian inventions on the basis of Kando having invented them. However Kando was primarily interested in their application to railways, as a means of using 3 phase motors with single wire catenary supplies. Did he invent the phase converter?  Was this invented first, then conveniently used for railways?  Or was it invented to meet this specific railway need?   Andy Dingley (talk) 23:17, 13 May 2014 (UTC)
thread_title:  Invention? 

message: As I understand it, induction motors spin at a speed below some multiple of the single-phase line frequency, while induction generators spin at a speed above the same multiple of the line frequency.
How is this speed difference worked out for induction phase converters so that the output of the third phase is actually usable?
-- DMahalko (talk) 19:44, 13 April 2016 (UTC)
thread_title:  Induction motor vs induction generator? 

message: > Because two of the outputs are the same as the single phase input, their phase relationship is 180°. This leaves the synthesized phase to be +/-90° from the input terminals.
This line appears to be wrong or at least very misleading. Here is a video explaining: https://www.youtube.com/watch?v=mUXLxK_zI24 99.145.236.63 (talk) 21:41, 27 May 2023 (UTC)
replies: text: The phases are measured between L1&L2, L2&L3, and L3&L1. Note that only one of those contains both the single phase connections. The phases between these three voltages is 360/3=120. The 180 phase you are talking about is between L1&neutral and L2&neutral. When measuring three phase phases there is no neutral. Note that the L2&L3 and L3&L1 both include the simulated leg (typically L3) and are unrelated to the L1&neutral and L2&neutral voltages you are referring to. Your not necessarily wrong, but are discussing a different way of measuring voltages and comparing phases. gdChinaCat (talk) 01:15, 14 January 2024 (UTC)
thread_title:  Phase relationship is 120 not 180 

message: The use of ‘horsepower’ in the modern world seems rather quaint. 90.240.99.207 (talk) 17:03, 10 March 2024 (UTC)
thread_title:  SI units