Keywords
digital controller
external disturbance
plasma
robustness
optimization система автоматичного керування
цифровий регулятор
зовнішнє збурення
плазма
робастність
оптимізація
How to Cite
Abstract
Issues of design and research of energy-efficient and reliable semiconductor DC voltage converters for wide application in power supply devices of arc plasmatrons used in plasma metal cutting installations are considered. An estimated structural dynamic model of a soft-switching DC converter with a closed-loop control system combining the power part and the control system, intended for use as part of the latter as a digital module, was built. A technique is proposed and methods of controlling the converter are found, which provide the specified duration of transient processes, the permissible value of load current pulsations in a quasi-steady mode and the astatism of the output current, which confirms the correctness of the proposed technique. A prototype of a pulse stabilizer with digital control was made. The results of experimental studies of the sample confirm the effectiveness of the developed control device, namely the achievement of the specified duration of transient processes caused by a step change in the load current, close to 10-12 periods of conversion and astatism of the output current. It is shown that the application of a pulse stabilizer, in which a digital control loop is used, has significant advantages compared to analog options and has the advantages of a strategic plan. The use of combined control allows you to significantly reduce the requirements for the overall gain of the main control channel, which greatly facilitates the choice of sequential digital correction. Research results may be of interest to specialists in the field of power electronics, power supply systems of autonomous objects and control systems. References 14, figures 11.
References
Vereshchago E., Kostiuchenko V., Novogretskyi S. Analysis of dynamic characteristics of the inverter operating on a complex load. Eastern-European Journal of Enterprise Technologies. 2020. Vol. 5/5(107). Pp. 23–31. DOI: https://doi.org/10.15587/1729-4061.2020.215145.
Vereshchago E., Kostiuchenko V., Hrieshnov A. Calculation and Analysis of Dynamic Properties of a Soft Switching Converter under Operation on the Arc Load. 2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO), Kyiv, Ukraine, 22-24 April 2020. Pp. 820–825. DOI: https://doi.org/10.1109/ELNANO50318.2020.9088776.
Vereshchago E.M., Kostiuchenko V.I., Novogretskyi S.M. Analysis of a DC converter working on a plasma arc. (2023). Electrical Engineering & Electromechanics. 2023. No 5. Рр. 31–36. DOI: https://doi.org/10.20998/2074-272X.2023.5.05.
Kipensky A.V., Korol E.I. Analysis on the coordinate plane of the adjustment characteristics of pulsed DC voltage converters with input disturbance regulators. Vestnik Nac. tehn. un-ta KHPI: Temat. vyp.: Problemy avtomatizirovannogo elektroprivoda. Teoriya i praktika. 2015. No 12 (1121). Pp. 425–429. (Rus)
Turovsky O.L., Lisenko D.O. A dynamic model of a combined pulse voltage stabilizer for telecommunications with astatism of a different order. Naukovi zapysky Derzhavnoho universytetu informatsiino-komunikatsiinykh tekhnolohii. 2024. No 1(5). Pp. 120–129. DOI: https://doi.org/10.31673/2786-8362.2024.011515. (Rus)
Krasnobaev Yu.V., Nepomnyashchiy O.V., Ivanchura V.I., Pozharkova I.N., Yablonsky A.P. Pulse voltage stabilizer with digital control for an autonomous power supply system. Izvestiya Tomskogo politehnicheskogo universiteta. Inzhiniring georesursov. 2018. Vol. 329. No 11. Pp. 61–73. DOI: https://doi.org/10.18799/24131830/2018/11/210. (Rus)
Belov G.A. Structural models and study of the dynamics of pulse converters. Electricity. 2008. No 4. Pp. 40–49. (Rus)
Meleshin V.I. Transistor converter technology. Moskva: Tekhnosphera, 2005. 632 p. (Rus)
Giulia Di Capua, Seyed A. Shirsavar, Michael A. Hallworth, Nicola Femia. An enhanced model for small-signal analysis of the phase-shifted full-bridge converter. IEEE Transactions on Power Electronics. 2015. Vol. 30. Issue 3. Pp. 1567–1576. DOI: https://doi.org/10.1109/TPEL.2014.2314241.
Volkov I.V., Gubarevich V.N., Spirin V.M. System stability: current source is an electric arc with negative differential resistance. Tekhnichna Elektrodynamika. 1998. No 4. Pр. 43–45. (Rus)
Dyakonov V.P. MATLAB. Complete tutorial. Moskva: DMK Press, 2012. 768 p. (Rus)
Sidorets V.N., Pentegov I.V. Deterministic chaos in nonlinear circuits with an electric arc. Kyiv: Mezhdunarodhaia assotsiatsiia Svarka, 2013. 272 p. (Rus)
Komarov N.S. Power supply devices for powerful arc heaters for waste gasification plants. Tekhnichna Elektrodynamika. 2009. No 1. Pp. 70–76. (Rus)
Murashov Yu.V., Frolov V.Ya. Study of instability and turbulence of plasma flow in an arc plasma torch for coating. Science Week of St. Petersburg State Polytechnic University: materials of a scientific and practical conference with international participation. Institute of Energy and Transport Systems SPbSPU. Part 1. St. Petersburg: Polytechnic Publishing House. Univ., 2014. Pp. 102–104. (Rus)
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2024 Tekhnichna Elektrodynamika