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Title: ASSESSMENT OF THERMAL PARAMETERS FROM THE MANUFACTURING PROCESS OF METAL OXIDE VARISTORS
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ASSESSMENT OF THERMAL PARAMETERS FROM THE MANUFACTURING PROCESS OF METAL OXIDE VARISTORS
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1314-2704
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English
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18
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6.1
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Nowadays, protection of any sensitive electric equipment against any type of
overvoltage (including lightning applied on power networks) is a big challenge for the power electronics domain. The most advanced and reliable devices used in order to perform this operation are metal oxide varistor based surge-arresters. These polycrystalline ceramic varistors are made of a mixture of different metal oxides, where the main ingredient (more than 80-90% as mass concentration) is the ZnO. The real improvements of these devices could be performed only in reference with their manufacturing process, by introducing different additives, with particular influences on the electrical behavior of the semi-conductor material, especially on their non-linear relation between voltage applied and current response and on their heat absorption capability. There is no physical or analytical model in order to assess the influence of dopants (additives) on the main electrical characteristics. This is an empirical process which will lead to the development of new semiconductor materials. This article will explain the influence of the sintering temperature on the electrical properties of two varsitor materials, with different additives |
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conference
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18th International Multidisciplinary Scientific GeoConference SGEM 2018
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18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018
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Proceedings Paper
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STEF92 Technology
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International Multidisciplinary Scientific GeoConference-SGEM
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Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac
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75-82
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02-08 July, 2018
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website
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cdrom
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1777
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Metal Oxide Varistors; Temperature; Manufacturing Process
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