Weird conclusion of technical paper - Page 1
Forum section: electronics / general

author: Circlotron
author_rank: Super Contributor
timestamp: February 22, 2022, 02:31:13 am
content: Was reading a paper regarding the effect of failure of the semiconductor switching devices of a 3-phase inverter driving a permanent magnet synchronous motor.Quotehttps://www.icrepq.com/icrepq-08/288-estima.pdfThe conclusion the authors come to sounds like they totally miss the point from a real world point of view.QuoteI would have thought the best approach would have been to repair the busted drive, not install some sort of filter to bandaid the problem!

author: Someone
author_rank: Super Contributor
timestamp: February 22, 2022, 02:41:20 am
content: Poorly ranked journal publishes junk content:https://www.scopus.com/sourceid/21100916460Just because something is peer reviewed and published doesn't make it good.

author: amyk
author_rank: Super Contributor
timestamp: February 22, 2022, 02:56:07 am
content: I've become suspicous of any journal whose name starts with "IC" - seems to be a common name-prefix for all the low quality ones.

author: tooki
author_rank: Super Contributor
timestamp: February 22, 2022, 07:35:25 am
content: Quote from: amyk on February 22, 2022, 02:56:07 amIC means “international conference”, and conference proceedings aren’t peer-reviewed journal articles.The name of the journal is RE&PQJ.

author: tooki
author_rank: Super Contributor
timestamp: February 22, 2022, 07:40:49 am
content: Quote from: Someone on February 22, 2022, 02:41:20 amI am SHOCKED that a journal with this website isn’t 100% serious and rigorous!(Not visible in the screenshot: the animation!)

author: Ice-Tea
author_rank: Super Contributor
timestamp: February 22, 2022, 07:42:11 am
content: *shrugs*Might have some value for FMEA.

author: Sal Ammoniac
author_rank: Super Contributor
timestamp: February 22, 2022, 07:51:36 am
content: Quote from: Circlotron on February 22, 2022, 02:31:13 amAgreed. Their conclusion does sound somewhat ridiculous, but I can attest that the failure of one transistor in a half-bridge of a 3-phase motor inverter won’t prevent the motor from running. This happened to me when the connection to the gate of one of the MOSFETs in my circuit came loose, and much to my surprise the motor kept running, albeit roughly.Their paper does sound more like an academic exercise than a real-world scenario, however.

author: amyk
author_rank: Super Contributor
timestamp: February 22, 2022, 02:41:28 pm
content: Quote from: tooki on February 22, 2022, 07:40:49 amThat looks like typical Indian style.

author: rsjsouza
author_rank: Super Contributor
timestamp: February 22, 2022, 04:12:44 pm
content: Indeed the conclusion is very weird. Given the premise, I would have concluded simply that the analysis indeed showed distortions/harmonics and a possible useful development would be to perhaps detect a fault condition by measuring/logging the behaviour of the sinked current in a real world scenario.Since the paper also has some other errors, I don't think it was thoroughly reviewed as well. It may make sense that it could have been presented in a conference or as a simple panel - the latter tends to be even less scrutinized.

author: Siwastaja
author_rank: Super Contributor
timestamp: February 22, 2022, 05:26:51 pm
content: Typical low-quality junk science. There is alotof this BS. Need funding -> need to satisfy number of papers requirement -> brainstorm something in the coffee room -> write a paper quickly. The problem isn't (only) in the individuals, it's in the system.The reason this paper exists is, "Department of Electrical and Computer Engineering" of "University of Coimbra" got some funding (possibly from taxpayers), and J. O. Estima and A. J. Marques Cardoso got paid; not much, but better than being unemployed. Heck, Cardoso has even paid for the IEEE membership, thinking it makes him look more serious!

author: hans
author_rank: Super Contributor
timestamp: February 22, 2022, 06:38:21 pm
content: Quote from: tooki on February 22, 2022, 07:35:25 amYep. Although most reputable conferences still apply peer review on their proceedings, and some may have an acceptance ratio of only 15%. Some professors even say that being able to publish in those 1-out-of-6-chance conferences is 'worth' more than a journal paper.Some conferences also have absurdly long papers. I have had to read papers up to 20 pages (each) for my literature study, which in the condensed two-column IEEE format is roughly equal to a masters thesis. The motivation for that goes beyond me, because the density of new information is sometimes really low (e.g. when authors recite basic formulas or show not really relevant figures/tables).Likewise, this paper follows same tracks as adding a lot of irrelevant details but still not getting to the point IMO. I've read the introduction of this paper 2 to 3 times to find the reason why it is relevant to research this. I still have no clue.A lot of the other formulas etc. also seem quite basic, so maybe it was a student project that got transformed into a paper? Some universities also challenge students to write the best paper in class, so they can present it at a national conference. The 2nd author seems to be part of organizing committee of that conference.It sounds like it is researching what the effects are on throttle response and power output when a 4cyl petrol engine is only running on 3 cylinders. Hypothesis: it will probably start to shake a lot, pick up very badly and have reduced peak output (if it hasn't blown itself up before that).So.. maybe shut it off and fix it?

author: coppercone2
author_rank: Super Contributor
timestamp: February 25, 2022, 06:45:10 am
content: I mean its a good way to keep the power grid running while waiting for replacements..