Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels

Aleksandr Agunov; Artem A. Karabanov; Il&#039;yas Abdulhakov; Karen Sargsyan

doi:10.20295/2223-9987-2025-1-172-182

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ENSURING ELECTROMAGNETIC COMPATIBILITY OF REACTIVE-POWER COMPENSATION DEVICES IN TRAIN HECTOMETRE-WAVE RADIO CHANNELS Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels

АА Аа

Published in Bulletin of scientific research results · Volume 2025, Issue 1 · Pages 172–182 · Rubric: PROBLEMATIC OF TRANSPORT SYSTEM

DOI: https://doi.org/10.20295/2223-9987-2025-1-172-182

Received: 24.03.2025 Accepted: 25.03.2025 Published: 25.03.2025

Authors

Aleksandr Agunov

Artem A. Karabanov

Il'yas Abdulhakov

Karen Sargsyan

Aleksandr Agunov

Academic degree: doctor of technical sciences

Science rang: professor

Emperor Alexander I St. Petersburg State Transport University head · Department of "Electricity supply of railways" · Russian Federation

Artem A. Karabanov

NIIEFA-ENERGO Electrical Mechanical Engineer · Russian Federation

Il'yas Abdulhakov

Academic degree: candidate of technical sciences

Saint Petersburg Electrotechnical University “LETI” Associate Professor · Russian Federation · St. Petersburg

NIIEFA-ENERGO, LLC Head of Group, Design and Engineering Department3; · Russian Federation · St. Petersburg

Karen Sargsyan

Saint Petersburg Electrotechnical University “LETI” Master’s Degree Student · Russian Federation · St. Petersburg

NIIEFA-ENERGO, LLC Engineer of the Design and Engineering Department · Russian Federation · St. Petersburg

ABSTRACT

Purpose: To analyze the cause of quality deterioration or total lack of train hectometre-wave (HMW) radio communication (TRC) on 25 kV AC railway sections using reactive-power compensation semiconductors having pulse-modulated output parameters with changing pulse time parameters. Methods: The analysis was carried out based on the replacement circuit of the compensation device output filter where distributed elements including parasitic ones were replaced by concentrated ones, which made it possible to predict a change in the nature of the element’s reaction in the frequency domain and, consequently a change in the filter transfer characteristics. In particular, the filter characteristics changes were studied when it was connected to a railway section represented as a homogeneous artificial line. The filter’s main parasitic parameters were approximately determined according to the engineering techniques based on the geometric dimensions of the elements as such and their connections. In compliance with the requirements of regulatory standards, the filter transmission coefficient for the hectometer range frequency has been determined analytically. A set of computer models was developed in the LTSpice package that helped to study the filter frequency characteristics and their change depending on the magnitude of the elements’ parasitic parameters, as well as the filter compliance with the requirements. In particular, an analytical calculation of the filter characteristics by the method of complex amplitudes was carried out taking into account the alternating magnetization loss of the high-frequency filter choke material applied. Results: Based on the calculations carried out, the optimal filter configuration has been selected starting from a frequency of 100 kHz providing interference suppression at a level not lower than 45 dB (178 times). The filter transfer characteristics have been considered for both common-mode and differential components of the interference. The filter parameters have been selected, among other things, in such a way that there would be no good side resonances that could lead to self-excitation of the compensation device that would generate its own harmonics. Practical significance: A solution has been found to provide and possibly refine reactive-power compensation devices with smooth control based on semiconductor converters to ensure their electromagnetic compatibility in the radio frequency band.

KEYWORDS

Electromagnetic compatibility, train hectormetre radio communication, electromagnetic interference on Russian Railways lines, refinement of the reactive-power compensation device filter with smooth control, frequency analysis

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GOST

Agunov A. V., Karabanov A. A., Abdulhakov I. Y., Sargsyan K. M. Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels // Bulletin of scientific research results. 2025. no. 1. pp. 172-182. DOI: https://doi.org/10.20295/2223-9987-2025-1-172-182. (Date of access 19.09.2026).

MLA

Aleksandr Agunov, Karabanov A. A., Abdulhakov I. Y., Sargsyan K. M.. "Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels." Bulletin of scientific research results 2025.1 (2025): 172-182. DOI: https://doi.org/10.20295/2223-9987-2025-1-172-182.

APA

Agunov A. V., Karabanov A. A., Abdulhakov I. Y., Sargsyan K. M. (2025). Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels. Bulletin of scientific research results, 2025(1), 172-182. https://doi.org/10.20295/2223-9987-2025-1-172-182

Chicago

Aleksandr Agunov, Karabanov A. A., Abdulhakov I. Y., Sargsyan K. M.. "Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels." Bulletin of scientific research results 2025, no. 1 (2025): 172-182. https://doi.org/10.20295/2223-9987-2025-1-172-182.

WIKI

{{cite journal | author = Agunov A. V., Karabanov A. A., Abdulhakov I. Y., Sargsyan K. M. | title = Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels | journal = Bulletin of scientific research results | year = 2025 | volume = 2025 | issue = 1 | pages = 172-182 | doi = 10.20295/2223-9987-2025-1-172-182 }}

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ENSURING ELECTROMAGNETIC COMPATIBILITY OF REACTIVE-POWER COMPENSATION DEVICES IN TRAIN HECTOMETRE-WAVE RADIO CHANNELS Ensuring Electromagnetic Compatibility of Reactive-Power Compensation Devices in Train Hectometre-Wave Radio Channels

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