Rogowski Coil with Ferromagnetic Core for Precise Monitoring of Low-frequency Currents

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21230%2F21%3A00360455" target="_blank" >RIV/68407700:21230/21:00360455 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1109/INTERMAG42984.2021.9579562" target="_blank" >https://doi.org/10.1109/INTERMAG42984.2021.9579562</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/INTERMAG42984.2021.9579562" target="_blank" >10.1109/INTERMAG42984.2021.9579562</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Rogowski Coil with Ferromagnetic Core for Precise Monitoring of Low-frequency Currents

Popis výsledku v původním jazyce

Sensitivity of precise Rogowski coils can be increased by using low-permeability magnetic core instead of air core. This allows to increase the resolution for small current values. We have studied an impact of cores with µr = 14 and 26 on linearity, frequency dependence, crosstalk from external currents and sensitivity to misplacement of the measured current. Both 3D FEM simulations and measurement were used. While we found negligible effect on crosstalk and resistance to misplacement and also on frequency characteristics, the linearity was significantly degraded. However, the linearity error in case of µr = 14, 80 mm diameter Rogowski coil with 1000 A range is still below 0.2 %, which is sufficient for energy meters.

Název v anglickém jazyce

Rogowski Coil with Ferromagnetic Core for Precise Monitoring of Low-frequency Currents

Popis výsledku anglicky

Sensitivity of precise Rogowski coils can be increased by using low-permeability magnetic core instead of air core. This allows to increase the resolution for small current values. We have studied an impact of cores with µr = 14 and 26 on linearity, frequency dependence, crosstalk from external currents and sensitivity to misplacement of the measured current. Both 3D FEM simulations and measurement were used. While we found negligible effect on crosstalk and resistance to misplacement and also on frequency characteristics, the linearity was significantly degraded. However, the linearity error in case of µr = 14, 80 mm diameter Rogowski coil with 1000 A range is still below 0.2 %, which is sufficient for energy meters.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/GA20-27150S" target="_blank" >GA20-27150S: NanoFluxGate</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název statě ve sborníku

2021 IEEE International Magnetic Conference (INTERMAG)

ISBN

978-0-7381-3099-6

ISSN

—

e-ISSN

—

Počet stran výsledku

5

Strana od-do

1-5

Název nakladatele

Institute of Electrical and Electronics Engineers

Místo vydání

New York

Místo konání akce

Lyon

Datum konání akce

26. 4. 2021

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000784782500007