Keywords
electric-spark discharge
electric discharge installation
capacitive energy storage
metal granular layer
electric-spark dispersion імпульсний струм
електроіскровий розряд
електророзрядна установка
ємнісний накопичувач енергії
шар металевих гранул
електроіскрове диспергування
How to Cite
Abstract
The paper reveals the electro-physical features of the formation of multi-channel pulse currents and fast-migrating electric sparks in the layer of current-conductive granules of electric-discharge installations (EDIs) with reservoir capacitors. Such features make it possible to increase many times the productivity of the electric-spark dispersion of metal granules during single discharge current of reservoir capacitors, which flows between the electrodes of EDIs. Theoretical substantiation and experimental confirmation of multi-channel spark discharges in the layer of conductive granules are presented. The influence of the capacitance and charge voltage of reservoir capacitors on the nature of transient processes in the discharge circuit of the EDIs is investigated. The dependence of the effective value of the active load resistance of the EDIs on the value of the pre-charge voltage of its reservoir capacitors and the value of its capacitances has been experimentally determined. It is proved that an increase in the averaged Q-factor of the discharge circuit with an increase in the charge voltage of the capacitor bank of EDI is caused by a decrease in the effective value of the active resistance of the layer of metal granules when spark-generating discharge currents flow through it. References 16, Figures 7.
References
Fryungel F. Pulse technique. Generation and application of capacitor discharges. Moskva: Nauka, 1970. 320 p. (Rus).
Livshits A.L., Otto M.Sh. Pulse electrical engineering. Moscow: Energoatomizdat, 1983. 352 p. (Rus)
Lazarenko B.R., Lazarenko N.I. Physics of the electrospark method of metal processing. Moskva: TsBTI MEP, 1946. 76 p. (Rus)
Zolotykh B.N. Physical foundations of electrospark processing of metals. Moskva: Gostekhizdat, 1953. 108 p. (Rus)
Yutkin L.A. Electro-hydraulic effect. Moskva–Leningrad: Mashgiz, 1955. 50 p. (Rus)
Berkowitz A.E., Walter J.L. Spark Erosion: A Method for Producing Rapidly Quenched Fine Powders. Jour-nal of Materials Research. 1987. No 2. Pp. 277–288. DOI: https://doi.org/10.1088/0957-4484/23/41/415604.
Vovchenko O.I., Demydenko L.Yu., Blashchenko O.D., Starkov I.M. Improving the efficiency of high-voltage electric discharge installations which use exothermal dispersed media. Tekhnichna Elektrodynamika. 2019. No 5. Pp. 77–82. DOI: https://doi.org/10.15407/techned2019.05.0077. (Rus)
Ishibashi V., Araki T., Kisimoto E., Kimo H. Method of Producing Pure Aluminia by Spark Discharge Proc-ess and the Characteristics there of. Ceramics Japan. 1971. No 6. Pp. 461–468.
Kornev Ia., Saprykin F., Lobanova G., Ushakov V., Preis S. Spark erosion in a metal spheres bed: Experimen-tal study of the discharge stability and energy efficiency. Journal of Electrostatics. 2018. Vol. 96. Pp. 111–118. DOI: https://doi.org/10.1016/j.elstat.2018.10.008.
Nguyen P.K., Lee K.H., Kim S.I., Ahn K.A., Chen L.H., Lee S.M., Chen R.K., Jin S., Berkowitz A.E. Spark Erosion: a High Production Rate Method for Producing Bi0.5Sb1.5Te3 Nanoparticles With Enhanced Thermoelectric Performance. Nanotechnology. 2012. Vol. 23. Pр. 415604-1 – 415604-7. DOI: https://doi.org/10.1088/0957-4484/23/41/415604
Hong J.I., Parker F.T., Solomon V.C., Madras P., Smith D.J. , Berkowitz A.E. Fabrication of spherical parti-cles with mixed amorphous/crystalline nanostructured cores and insulating oxide shells. J. Mater. Res. 2008. Vol. 23. Issue 06. Pp. 1758–1763. DOI: https://doi.org/10.1557/JMR.2008.0199.
Shcherba A.A., Suprunovska N.I., Petrichenko S.V. Dynamic processes in electric discharge installations. Kyiv: TOV Pro Format, 2017. 459 p. (Rus)
Shcherba A.A., Ivaschenko D.S., Suprunovska N.I. Development of difference equations method for analysis of transient processes in the circuits of electro-discharge systems at stochastic changing of load resistance. Tekhnichna Elektrodynamika. 2013. No 3. Pp. 3–11. (Rus)
Shydlovska N.A., Zakharchenko S.M. Discrete nonlinear-probabilistic model of the equivalent electrical re-sistance of a layer of metal granules. Tekhnichna Elektrodynamika. 2021. No 2. Pp. 3–12. https://doi.org/10.15407/techned2021.02.003. (Ukr)
Ivashchenko D.S., Shcherba A.A., Suprunovska N.I. Analyzing Probabilistic Properties of Electrical Charac-teristics in the Circuits Containing Stochastic Load. IEEE International Conference on Intelligent Energy and Power Systems IEPS-2016. Kyiv, Ukraine, June 7–11, 2016. Pp. 45–48. DOI: https://doi.org/10.1109/IEPS.2016.7521887
Shcherba A.A., Suprunovska N.I. Electric Energy Loss at Energy Exchange Between Capacitors as Function of Their Initial Voltages and Capacitances Ratio. Tekhnichna Elektrodynamika. 2016. No 3. Pp. 9–11. DOI: https://doi.org/10.15407/techned2016.03.009.
Zakharchenko S.N., Kondratenko I.P., Perekos A.E., Zalutsky V.P., Kozyrsky V.V., Lopatko K.G. Influence of discharge pulses duration in a layer of iron granules on the size and structurally-phase conditions of its electroerosion particles. Eastern-European Journal of Enterprise Technologies. 2012. Vol. 6. No 5 (60). Pp. 66–72. (Rus)
Rafik F., Gualous H., Gallay R., Crausaz A, and Berthon A. Frequency, thermal and voltage supercapacitor characterization and modeling. Journal of Power Sources. 2007. Vol. 165. No 2. Pp. 928–934. DOI: https://doi.org/10.1016/j.jpowsour.2006.12.021
Beletsky О.О., Suprunovska N.I., Shcherba A.A. Dependences of power characteristics of circuit at charge of supercapacitors on their initial and final voltages. Tekhnichna Elektrodynamika. 2016. No 1. Pp. 3–10. DOI: https://doi.org/10.15407/techned2016.01.003. (Ukr)
Petrichenko S.V. Regulation of the effective volume of the discharge plasma during the contact electrospark process in a liquid. Elektronnaya Obrabotka Materialov. 2008. Vol. 44. No 3. Pp. 4–10. (Rus) DOI: https://doi.org/10.3103/S1068375508030010
Demirchyan K.S., Neiman L.R., Korovkin N.V., Chechurin V.L. Theoretical foundations of electrical engi-neering. Vol. 2. St. Petersburg: Peter, 2003. 576 p. (Rus)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2022 Tekhnichna Elektrodynamika