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Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment

Aeronautical industry is evolving towards more electric aircrafts (MEA), which will require much more electrical power compared to conventional models. To satisfy this increasing power demand and stringent weight requirements, distribution voltages must be raised, which jointly with the low-pressure...

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Detalles Bibliográficos
Autores principales: Bas-Calopa, Pau, Riba, Jordi-Roger, Moreno-Eguilaz, Manuel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8915065/
https://www.ncbi.nlm.nih.gov/pubmed/35271003
http://dx.doi.org/10.3390/s22051856
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author Bas-Calopa, Pau
Riba, Jordi-Roger
Moreno-Eguilaz, Manuel
author_facet Bas-Calopa, Pau
Riba, Jordi-Roger
Moreno-Eguilaz, Manuel
author_sort Bas-Calopa, Pau
collection PubMed
description Aeronautical industry is evolving towards more electric aircrafts (MEA), which will require much more electrical power compared to conventional models. To satisfy this increasing power demand and stringent weight requirements, distribution voltages must be raised, which jointly with the low-pressure environment and high operating frequencies increase the risk of electrical discharges occurrence. Therefore, it is important to generate data to design insulation systems for these demanding applications. To this end, in this work a sphere-to-plane electrode configuration is tested for several sphere geometries (diameters ranging from 2 mm to 10 mm), frequencies of 50 Hz, 400 Hz and 800 Hz and pressures in the 20–100 kPa range, to cover most aircraft applications. The corona extinction voltage is experimentally determined by using a gas-filled tube solar blind ultraviolet (UV) sensor. In addition, a CMOS imaging sensor is used to locate the discharge points. Next, to gain further insight to the discharge conditions, the electric field strength is calculated using finite element method (FEM) simulations and fitted to equations based on Peek’s law. The results presented in this paper could be especially valuable to design aircraft electrical insulations as well as for high-voltage hardware manufacturers, since the results allow determining the electric field values at which the components can operate free of surface discharges for a wide altitude range.
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spelling pubmed-89150652022-03-12 Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment Bas-Calopa, Pau Riba, Jordi-Roger Moreno-Eguilaz, Manuel Sensors (Basel) Article Aeronautical industry is evolving towards more electric aircrafts (MEA), which will require much more electrical power compared to conventional models. To satisfy this increasing power demand and stringent weight requirements, distribution voltages must be raised, which jointly with the low-pressure environment and high operating frequencies increase the risk of electrical discharges occurrence. Therefore, it is important to generate data to design insulation systems for these demanding applications. To this end, in this work a sphere-to-plane electrode configuration is tested for several sphere geometries (diameters ranging from 2 mm to 10 mm), frequencies of 50 Hz, 400 Hz and 800 Hz and pressures in the 20–100 kPa range, to cover most aircraft applications. The corona extinction voltage is experimentally determined by using a gas-filled tube solar blind ultraviolet (UV) sensor. In addition, a CMOS imaging sensor is used to locate the discharge points. Next, to gain further insight to the discharge conditions, the electric field strength is calculated using finite element method (FEM) simulations and fitted to equations based on Peek’s law. The results presented in this paper could be especially valuable to design aircraft electrical insulations as well as for high-voltage hardware manufacturers, since the results allow determining the electric field values at which the components can operate free of surface discharges for a wide altitude range. MDPI 2022-02-26 /pmc/articles/PMC8915065/ /pubmed/35271003 http://dx.doi.org/10.3390/s22051856 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Bas-Calopa, Pau
Riba, Jordi-Roger
Moreno-Eguilaz, Manuel
Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment
title Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment
title_full Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment
title_fullStr Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment
title_full_unstemmed Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment
title_short Measurement of Corona Discharges under Variable Geometry, Frequency and Pressure Environment
title_sort measurement of corona discharges under variable geometry, frequency and pressure environment
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8915065/
https://www.ncbi.nlm.nih.gov/pubmed/35271003
http://dx.doi.org/10.3390/s22051856
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