Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Pawel Witczak"'
Autor:
Elzbieta Lesniewska, Pawel Witczak
Publikováno v:
Energies, Vol 17, Iss 2, p 363 (2024)
In 1831, Michael Faraday discovered the phenomenon of electromagnetic induction, which allowed for the construction of previously unknown electrical devices and significantly impacted economic and social development [...]
Externí odkaz:
https://doaj.org/article/14e9389d36904be59e1509a69cd951a1
Autor:
Piotr Osinski, Pawel Witczak
Publikováno v:
Energies, Vol 16, Iss 12, p 4584 (2023)
This article presents the comparison of 3D and 2D finite element models of a power transformer designed for reactive power compensation stations. There is a lack of studies in the literature on internal electromagnetic phenomena in the active part of
Externí odkaz:
https://doaj.org/article/0518f124aa3d4343bb31a7e8050a43dc
Autor:
Pawel Witczak, Michal Swiatkowski
Publikováno v:
Energies, Vol 16, Iss 6, p 2886 (2023)
This article presents a step-by-step methodology for calculating transformer tank vibrations caused by electromagnetic forces. This approach uses 3D finite element models for both magnetic and structural calculations. Particular attention was paid to
Externí odkaz:
https://doaj.org/article/83a321e8d53246419816e0073610f9fa
Autor:
Pawel Witczak, Michal Swiatkowski
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 67:35-45
The aim of this paper is to present the impact of the leakage flux on magnetic shunts and tank walls of power transformers from vibrational point of view. The experimental studies of the large power transformers show that tank vibrations and the resu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b378e17534bfe4d92f572d716f908ba4
https://doi.org/10.3233/jae-201622
https://doi.org/10.3233/jae-201622
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 64:S115-S130
The paper deals with analysis of vibrational behavior of induction motor using the combined approach linking the finite elements method (FEM) applied to modelling of magnetic and mechanical phenomena in the motor with its modal description in spectra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::57ece999a05a48510187168af5708007
https://doi.org/10.3233/jae-209509
https://doi.org/10.3233/jae-209509
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 57:193-203
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::66ff32be25777ae3befebbae79f57575
https://doi.org/10.3233/jae-170144
https://doi.org/10.3233/jae-170144
Autor:
Michal Swiatkowski, Pawel Witczak
Publikováno v:
Open Physics, Vol 15, Iss 1, Pp 862-866 (2017)
This paper describes the method of homogenization of material properties applied to windings used in power transformers. Exemplary results of natural modes of vibrations obtained by means of finite elements method are also included.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc14bb1e742702b9cb9e7c6ab94c6520
https://doaj.org/article/6a9d906253f340b98d80b02b01655725
https://doaj.org/article/6a9d906253f340b98d80b02b01655725
Autor:
Pawel Witczak, Michal Swiatkowski
Publikováno v:
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering. 35:2087-2094
Purpose The purpose of this paper is to calculate forces created by the magnetic leakage field, which are directly applied to tank walls via magnetic shield. Design/methodology/approach Electromagnetic and mechanical calculations use 3D finite elemen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9560ef209e98c586aa39c9c1aac4064b
https://doi.org/10.1108/compel-03-2016-0094
https://doi.org/10.1108/compel-03-2016-0094
Autor:
Krzysztof Majer, Pawel Witczak
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 51:419-429
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::accf2d63a6b9696ff52686d5ef9aab8d
https://doi.org/10.3233/jae-150175
https://doi.org/10.3233/jae-150175
Autor:
Jacek Swiniarski, Pawel Witczak
Publikováno v:
International Journal of Applied Electromagnetics and Mechanics. 46:419-425
Magnetic vibration forces in PM motor were obtained by finite elements analysis of 2D magnetic field followed by 2D Fourier transform. The dominated modal components of force spectrum were applied in 3D structural model preserving their rotational ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::216017867e0e3b95a8377d859944cbab
https://doi.org/10.3233/jae-141953
https://doi.org/10.3233/jae-141953