On the dynamics of cutting arc plasmas: The role of the power supply ripple

The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the nonequilibrium p...

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Detalles Bibliográficos
Autores principales: Prevosto, L., Mancinelli, B., Kelly, H.
Formato: JOUR
Materias:
Electrical discharge
Plasma
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_21190275_v1_n2_p12_Prevosto
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_21190275_v1_n2_p12_Prevosto
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spelling todo:paper_21190275_v1_n2_p12_Prevosto2023-10-03T16:39:24Z On the dynamics of cutting arc plasmas: The role of the power supply ripple Prevosto, L. Mancinelli, B. Kelly, H. Electrical discharge Plasma The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the nonequilibrium plasma inside the nozzle of a 30 A oxygen cutting torch with a 7 % ripple level of its power source are reported in this work. The observed electron temperature (mean value ≈ 5400 K) shows a rms deviation ≈ 5 % (± 300 K), which is of the order of the arc voltage ripple level. A considerable different situation occurs with the plasma density (mean value ≈ 3 × 10 19 m -3). In this case the rms deviation was ≈ 75 %, much greater than that of the electron temperature. © 2012, Advanced Electromagnetics. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_21190275_v1_n2_p12_Prevosto
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Electrical discharge
Plasma
spellingShingle Electrical discharge
Plasma
Prevosto, L.
Mancinelli, B.
Kelly, H.
On the dynamics of cutting arc plasmas: The role of the power supply ripple
topic_facet Electrical discharge
Plasma
description The power sources used in cutting arc torches are usually poorly stabilized and have a large ripple factor. The strong oscillatory components in the voltage and arc current produce in turn, large fluctuations in the plasma quantities. Experimental observations on the dynamics of the nonequilibrium plasma inside the nozzle of a 30 A oxygen cutting torch with a 7 % ripple level of its power source are reported in this work. The observed electron temperature (mean value ≈ 5400 K) shows a rms deviation ≈ 5 % (± 300 K), which is of the order of the arc voltage ripple level. A considerable different situation occurs with the plasma density (mean value ≈ 3 × 10 19 m -3). In this case the rms deviation was ≈ 75 %, much greater than that of the electron temperature. © 2012, Advanced Electromagnetics. All rights reserved.
format JOUR
author Prevosto, L.
Mancinelli, B.
Kelly, H.
author_facet Prevosto, L.
Mancinelli, B.
Kelly, H.
author_sort Prevosto, L.
title On the dynamics of cutting arc plasmas: The role of the power supply ripple
title_short On the dynamics of cutting arc plasmas: The role of the power supply ripple
title_full On the dynamics of cutting arc plasmas: The role of the power supply ripple
title_fullStr On the dynamics of cutting arc plasmas: The role of the power supply ripple
title_full_unstemmed On the dynamics of cutting arc plasmas: The role of the power supply ripple
title_sort on the dynamics of cutting arc plasmas: the role of the power supply ripple
url http://hdl.handle.net/20.500.12110/paper_21190275_v1_n2_p12_Prevosto
work_keys_str_mv AT prevostol onthedynamicsofcuttingarcplasmastheroleofthepowersupplyripple
AT mancinellib onthedynamicsofcuttingarcplasmastheroleofthepowersupplyripple
AT kellyh onthedynamicsofcuttingarcplasmastheroleofthepowersupplyripple
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