Citation for origins of the Kloss formula

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Discussion Overview

The discussion centers around the Kloss formula, which is used to approximate the relationship between slip and motor torque in squirrel cage induction motors. Participants are seeking citations and sources for this formula, particularly in the context of its usage in European and Russian literature.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant notes that the Kloss formula is widely used in Europe and Russia but is not commonly cited in American literature.
  • Another suggests following the citation trail backwards and provides a reference to a Russian paper by Risthein that discusses the Kloss formula.
  • A participant expresses gratitude for the citation but mentions a lack of knowledge in Russian, making it difficult to access the original source.
  • Another participant refers to the first editions of Kingsley and Fitzgerald, indicating that they discuss the expression but do not mention Kloss by name.
  • One participant acknowledges the comment about Kingsley and Fitzgerald but indicates a lack of interest in pursuing that source further.
  • A suggestion is made to search for Kingsley and Fitzgerald on a book-selling website, providing a link for further exploration.
  • A participant expresses disinterest in Kingsley and Fitzgerald after finding another work by Krause more useful.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the best source for the Kloss formula, with multiple competing views and references being discussed. There is uncertainty regarding the accessibility of the original Russian sources and the relevance of Kingsley and Fitzgerald's work.

Contextual Notes

Limitations include the language barrier for non-Russian speakers regarding the original citation and the varying opinions on the usefulness of Kingsley and Fitzgerald's treatment of the topic.

Dr.D
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TL;DR
The Kloss formula (from Dr. Max Kloss) is apparently widely used in Europe and Russia to approximate the relation between slip and motor torque in a squirrel cage induction motor, but I've never seen it in an American paper or book. Does anyone have a source citation for this?
The Kloss formula (from Dr. Max Kloss) is apparently widely used in Europe and Russia to approximate the relation between slip and motor torque in a squirrel cage induction motor, but I've never seen it in an American paper or book. Does anyone have a source citation for this?
 
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I think you will need to explore and follow the citation trail backwards.
Just keep broadening the search. How is your technical Russian?
An example;
http://www.ene.ttu.ee/elektriajamid/teadus/artiklid/Comp_OF_models/“The detailed analysis of Kloss formula, and variations of this, are given by Risthein (1).”
Ref 1. Risthein, E. K matematitšeskoi interpretatsij mehanitšeskoi harakteristiki asinhronnogo dvigatelja. Trudö TPI 627, Tallinn, 1986. (In Russian)
 
Thank you for this citation, @Baluncore . Unfortunately, my knowledge of Russian is nonexistent, so I will not be able to read the original of that citation.

Since posting the request, I think I have tracked down the original source, a paper by Dr. Max Kloss in The Electron, 1909.
 
Hello, firsts editions of Kingsley and Fitzgerald have a treatment about the expression, but they never mentioned Kloss´s name. It appears in section 7 - Induction machines as "Normalized Torque-Slip curves", or something like that (My two editions of K-F are in spanish).
 
Interesting comment, Pablo. Thank you. I think I lost my copy of K-F quite a few years ago, so I suppose I'll just have to let that one go. Thanks anyway.
 
Thanks, Tom G., but I think I'll pass. I found K&F to be pretty fuzzy, and after I found the work by Krause, K&F was no longer of interest to me.
 

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