Pulse current stabilizer with digital control for the power supply system of the plasmatron

Authors

DOI:

https://doi.org/10.15588/1607-6761-2024-3-2

Keywords:

pulse current stabilizer, digital control circuit, duration of the transition process, esired transfer function, simulation model, synthesis, astatism, reference transient characteristic

Abstract

Purpose. Solution of theoretical and practical problems on providing digital control of a pulse converter using high-speed microprocessor tools in the output current stabilization mode with provision of a specified duration of transient processes caused by an increase in load voltage and output current astaticity, which allows to obtain significant advantages over analog versions.

Methodology. Review of literary and patent sources on the subject, theory of pulse automatic control systems, mathematical modeling of processes in pulse current stabilizers in the MATLAB / Simulink software environment and physical prototyping.

Findings. A simulation model of an autonomous power supply system based on a converter using soft switching technology of transistors and an arc load is presented. A control law is synthesized and a model of a pulse current stabilizer is developed. A method is proposed and ways are found to control a pulse current stabilizer that provide a given duration of transients and astatism of the output current. A model of a pulse stabilizer with digital control based on a single-crystal computing module is developed and manufactured. The results of the study confirm the achievement of a finite duration of transient processes caused by a step change in the load voltage, close to 3-4 periods of conversion and output current astaticism. It is shown that the use of a pulse stabilizer using a fully digital control circuit has undeniable advantages over analog systems.

Originality. The problem of synthesizing a digital controller for a given control time by the method of desired transfer functions for a soft switching operating converter on an arc load is solved. In addition to the given control time, additional quality requirements in the steady state are provided.

Practical value.The use of microprocessor technology makes it possible not only to implement complex and new highly efficient control algorithms for a converter operating in the pulse current stabilizer mode, but also to perform additional functions for overload protection, self-diagnostics and telemetry of pulse converters. The use of this same digital device simultaneously for the purpose of controlling a pulse converter will allow to abandon analog PWM controllers and thereby reduce its own energy consumption and weight and size characteristics, increase the reliability of the functioning of pulse converters in power supply systems as a whole.

Author Biographies

E.M. Vereshchago, Admiral Makarov National University of Shipbuilding

PhD, Associate Professor of the Department of Marine Instrument, Admiral Makarov National University of Shipbuilding, Mykolaiv

V.I. Kostiuchenko, Admiral Makarov National University of Shipbuilding

PhD, Associate Professor of the Department of Marine Electric Power Systems, Admiral Makarov National University of Shipbuilding, Mykolaiv

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Published

2024-10-30

How to Cite

Vereshchago, E., & Kostiuchenko, V. (2024). Pulse current stabilizer with digital control for the power supply system of the plasmatron. Electrical Engineering and Power Engineering, (3), 16–24. https://doi.org/10.15588/1607-6761-2024-3-2

Issue

No. 3 (2024): Electrical Engineering and Power Engineering

Section

Electrotechnics

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Copyright (c) 2024 E.M. Vereshchago, V.I. Kostiuchenko

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