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

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L. Prevosto

Abstract

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 non-equilibrium 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.

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How to Cite
Prevosto, L. (2012). On the dynamics of cutting arc plasmas: the role of the power supply ripple. Advanced Electromagnetics, 1(2), 12-15. https://doi.org/10.7716/aem.v1i2.35
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Research Articles

References


  1. V. A. Nemchinsky and W. S. Severance, What we know and what we do not know about plasma arc cutting, J. Phys. D: Appl. Phys. 39: R423–438, 2006.
    View Article

  2. V. Rat and J. F. Coudert, Pressure and arc voltage coupling in dc plasma torches: Identification and extraction of oscillation modes, J. Appl. Phys. 108: 043304, 2010.
    View Article

  3. J. F. Coudert and V. Rat, Influence of configuration and operating conditions on the electric arc instabilities of a plasma spray torch: role of acoustic resonance, J. Phys. D: Appl. Phys. 41: 205208, 2008.
    View Article

  4. S. Ghorui and A. K. Das, Origin of fluctuations in atmospheric pressure arc plasma devices, Phys. Rev. E 69: 026408, 2004.
    View Article

  5. L. Prevosto, H. Kelly and B. Mancinelli, On the physical origin of the nozzle characteristic and its connection with the double-arcing phenomenon in a cutting torch, J. Appl. Phys. 105: 013309, 2009.
    View Article

  6. L. Prevosto, H. Kelly and B. Mancinelli, On the Use of Sweeping Langmuir Probes in Cutting Arc Plasmas – Part I: Experimental Results, IEEE Trans. Plasma Sci. 36: 263–270, 2008.
    View Article

  7. L. Prevosto, H. Kelly and F. O. Minotti, On the Use of Sweeping Langmuir Probes in Cutting Arc Plasmas – Part II: Interpretation of the Results, IEEE Trans. Plasma Sci. 36: 271–277, 2008.
    View Article

  8. Y. P. Raizer, Gas Discharge Physics, Berlin, Germany: Springer, 1991.
    View Article

  9. L. Prevosto, H. Kelly and B. Mancinelli, On the dynamics of the space-charge layer inside the nozzle of a cutting torch and its relation with the "non-destructive" double-arcing phenomenon, J. Appl. Phys. 110: 083302, 2011.
    View Article

  10. L. Prevosto, H. Kelly and B. Mancinelli, On the space-charge boundary layer inside the nozzle of a cutting torch, J. Appl. Phys. 105: 123303, 2009.
    View Article

  11. M. C. M. van de Sanden, P. P. J. M. Schram. A. G. Peeters, J. A. M. van der Mullen, and G. M. W. Kroesen, Thermodynamic generalization of the Saha equation for a two-temperature plasma, Phys. Rev. A 40: 5273–5276,1989.
    View Article

  12. R. N. Franklin, You cannot patch active plasma and collisionless sheath, IEEE Trans. Plasma Sci. 30: 352–356, 2002.
    View Article

  13. T. E. Sheridan and J. Goree, Colisional plasma sheath model, Phys. Fluids B 3: 2796–2804, 1991.
    View Article

  14. S. Ghorui, J. V. R. Heberlein and E. Pfender, Non equilibrium modelling of an oxygen-plasma cutting torch, J. Phys. D: Appl. Phys. 40: 1966–1976, 2007.
    View Article