Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Vaclav Mentlik"'
Publikováno v:
Energies, Vol 11, Iss 3, p 508 (2018)
The paper is focused on the possibility of replacing petroleum-based oils used as electro-insulating fluids in high voltage machinery. Based on ten years of study the candidate base oil for the central European region is rapeseed (Brassica napus) oil
Externí odkaz:
https://doaj.org/article/eabdc481b4a04b2fba178b4a5d206eac
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 7, Iss 3, Pp 432-436 (2008)
Modern power electric drives brought advantages in induction motor control. In the same time appeared problems with high frequency square waveform voltage (pulse stress) produced by the voltage converters. Voltage converters produce repetitive pulses
Externí odkaz:
https://doaj.org/article/3716be26b8054bc2bc1aa19e43c66705
Autor:
Vaclav Mentlik, Radek Polansky
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 6, Iss 3, Pp 95-101 (2007)
Property changes in electrical insulating materials that appear during repeated voltage stress (e. g. in an applied voltage test) are an often discussed problem. The voltage exposure leads to irreversible changes in a negative sense as this investiga
Externí odkaz:
https://doaj.org/article/574f9c699c4f4539a85ccabdbedeca76
Publikováno v:
Advances in Electrical and Electronic Engineering, Vol 3, Iss 2, Pp 123-126 (2004)
One of current objectives of the electro insulating technology is the development of the material for extreme conditions. There is a need to operate some devices in extreme temperatures, for example the propulsion of the nuclear fuel bars. In these c
Externí odkaz:
https://doaj.org/article/7830779dc6e0420da0ff6b7a4a8983dc
Publikováno v:
2022 International Conference on Diagnostics in Electrical Engineering (Diagnostika).
Inseparable part of the high voltage transformers is electro insulating liquid. As known, for one hundred years are used mainly mineral oil based insulating fluids since having good electrical and physical properties and being relatively cheap. Over
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::62b0098f76b7b512e4be2ddf3a7f0e58
https://doi.org/10.1109/diagnostika55131.2022.9905076
https://doi.org/10.1109/diagnostika55131.2022.9905076
The usage of nanoparticles in various applications is a widely discussed topic in the science community. One of these applications is dielectrics and the proposition of nanoparticles as modification of matrix material in composites. Epoxy resins are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c56afb2f13c89867a3ffa712eb1ec5c8
http://hdl.handle.net/11025/47072
http://hdl.handle.net/11025/47072
Natural oils with their price and environment-friendly behaviour are more used these days like insulation fluids in transformers. There are often based on eg. rapeseed, soy, sunflower etc. oils. Compatibility between new materials used in transformer
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::071f8670706b2896a74c6bd7248494b6
http://hdl.handle.net/11025/42828
http://hdl.handle.net/11025/42828
Autor:
Vaclav Mentlik, Ondrej Michal
Recent demands for thin and more resistant materials, that can be used in rotating machines, is causing the evolution of the new generations of materials. Conventional electro-insulating materials include a variety of composite materials, such as the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fc5c51b5fe5d9194eec3c4c95524d394
http://hdl.handle.net/11025/42820
http://hdl.handle.net/11025/42820
Autor:
Vaclav Mentlik, G. Vuity, O. Nouini, Zoltán Ádám Tamus, Ondřej Michal, Jaroslav Hornak, Pavel Trnka
Dielectric materials are an essential part of all electrical devices. One of the reasons, their properties are studied, is that they are most impacted by internal and external influences during the lifetime of the electrical device. Composite materia
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::72e2a0fe1466712a2092f14fff674c9e
http://hdl.handle.net/11025/42842
http://hdl.handle.net/11025/42842
Autor:
Vaclav Mentlik, Ondřej Michal
Publikováno v:
Materials Letters. 223:41-44
Today, problems with the miniaturization of electrical machines necessitate the study of new materials or modification of conventional electro-insulating materials. The goal of this article is to show the possibilities for modification of epoxy resin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25faeea3a5517b4f1477ab87dbd6117d
https://doi.org/10.1016/j.matlet.2018.04.021
https://doi.org/10.1016/j.matlet.2018.04.021