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Modelovanje mernih transformatora bez jezgra sa feromagnetskim oklopom

Modelling of air-core measuring transformers with ferromagnetic shield

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Author
Herceg, Dejana
Mentor
Pekarić-Nađ, Neda
Committee members
Aleksić, Slavoljub
Bajović, Vera
Juhas, Anamarija
Mitrović, Zoran
Prša, Miroslav
Pekarić-Nađ, Neda
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Abstract
U ovoj doktorskoj tezi razvijen je postupak za ispitivanje uticaja oklopa na merni transformator bez jezgra sa stanovišta linearnosti transformatora i zaštite transformatora od uticaja elektromagnetske smetnje. Formiran je parametarski model oklopa i mernog transformatora bez jezgra. Izvedena su merenja magnetskih karakteristika feromagnetskih materijala, dat je novi analitički model histerezisa i određene su krive magnetisanja i permeabilnosti materijala. Na osnovu numeričkih i eksperimentalnih rezultata, a u skladu sa definisanim kriterijumom, izvršena je analiza kvaliteta oklapanja za razmatrane tipove oklopa.
In this thesis a method for examining the effects of shielding on a coreless measuring transformer from the standpoint of transformer linearity and EM radiation shielding is developed. A parametric model of the shield and the coreless measuring transformer is constructed. Measurements of magnetic properties of ferromagnetic materials were performed; a new analytical model of hysteresis is developed; magnetization curves and permeability of the materials are determined. Based on numerical and experimental results, and using the defined criterion, the analysis of shielding quality of the considered shield types was performed.
Faculty:
Универзитет у Новом Саду, Факултет техничких наука
Date:
03-02-2016
Keywords:
Modelovanje mernih transformatora bez jezgra / Modeling of air-core measuring transformers / oklapanje transformatora feromagnetskim oklopom / određivanje magnetskih karakteristika feromagnetskih materijala / metod konačnih elemenata / ferromagnetic shielding / determination of magnetic properties of ferromagnetic materials / FEM
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Handle
https://hdl.handle.net/21.15107/rcub_nardus_4791
URI
https://nardus.mpn.gov.rs/handle/123456789/4791
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