Verification of relative permittivity models for composite nanodielectrics at elevated temperatures

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23220%2F18%3A43952391" target="_blank" >RIV/49777513:23220/18:43952391 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/8642034" target="_blank" >https://ieeexplore.ieee.org/document/8642034</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICHVE.2018.8642034" target="_blank" >10.1109/ICHVE.2018.8642034</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Verification of relative permittivity models for composite nanodielectrics at elevated temperatures

Popis výsledku v původním jazyce

Composite materials and determination of their properties is a much-discussed topic not only in the field of the high voltage insulation systems. In this field, one of the most important parameters which may be determined is relative permittivity, also known as the dielectric constant. In some of the times, few mathematical formulas, e.g. linear, Birchak’s, Landau- Lifshitz-Looyeng’s or Lichtenecker-Rother’s, were valid. The basic problem of usage of these formulas occurred with the application of filler with nano- dimensions, where the dielectric properties are affected by interaction zone between the surface of the filler and the matrix. The main aim of this paper is to use these formulas for calculations at elevated temperatures and compare them with the results from prepared samples of nanocomposite material. The main contribution of this paper is placed in the knowledge of the temperature dependence of the magnesium oxide filler which was measured separately as a compressed pellet and may be used for precise calculation. The values of relative permittivity were measured from 30 to 120 °C. The different amount of filler was used for this investigation. Individual sample set contains 5 samples 10x10x0.1 cm for better statistical evaluation. The average values of the relative permittivity of each set were used for comparison with theoretical calculations and suggestion of modified formula.

Název v anglickém jazyce

Verification of relative permittivity models for composite nanodielectrics at elevated temperatures

Popis výsledku anglicky

Composite materials and determination of their properties is a much-discussed topic not only in the field of the high voltage insulation systems. In this field, one of the most important parameters which may be determined is relative permittivity, also known as the dielectric constant. In some of the times, few mathematical formulas, e.g. linear, Birchak’s, Landau- Lifshitz-Looyeng’s or Lichtenecker-Rother’s, were valid. The basic problem of usage of these formulas occurred with the application of filler with nano- dimensions, where the dielectric properties are affected by interaction zone between the surface of the filler and the matrix. The main aim of this paper is to use these formulas for calculations at elevated temperatures and compare them with the results from prepared samples of nanocomposite material. The main contribution of this paper is placed in the knowledge of the temperature dependence of the magnesium oxide filler which was measured separately as a compressed pellet and may be used for precise calculation. The values of relative permittivity were measured from 30 to 120 °C. The different amount of filler was used for this investigation. Individual sample set contains 5 samples 10x10x0.1 cm for better statistical evaluation. The average values of the relative permittivity of each set were used for comparison with theoretical calculations and suggestion of modified formula.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/LO1607" target="_blank" >LO1607: RICE – Nové technologie a koncepce pro inteligentní průmyslové systémy</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE 2018) : /proceedings/

ISBN

978-1-5386-5086-8

ISSN

2381-5043

e-ISSN

2474-3852

Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IEEE

Místo vydání

Piscataway

Místo konání akce

Athens, Greece

Datum konání akce

10. 9. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000462278900198