International Journal of Innovative Research in Engineering and Management (IJIREM) ISSN(Online): 2350-0557, Volume-12, Issue-2, April 2025 https://doi.org/10.55524/ijirem.2025.12.2.4 Article ID IJIR3079, Pages 22-29 www.ijirem.org Innovative Research Publication 22 A Device that Controls the Power Supply Sources of a Mobile Communication Base Station Davronbekov Dilmurod 1 , Matyokubov Utkir 2 , and *Muradov Muhammad 3 1, 3 Department of Mobile Communication Technologies, Tashkent University of Information Technologies named after Muhammad al-Khwarizmi, Tashkent, Uzbekistan 2 Department of Telecommunication Engineering, Urgench branch of Tashkent University of Information Technologies named after Muhammad al-Khwarizmi, Urgench, Uzbekistan Correspondence should be addressed to *Muhammad Muradov; Received: 24 February 2025 Revised: 10 March 2025 Accepted: 24 March 2025 Copyright © 2025 Made Muhammad Muradov et al. This is an open-access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited ABSTRACT- In this research work, the classifications of the device that controls the energy supply sources of the mobile communication base station are presented. The device is used to automatically control the connection and disconnection of the next power source based on the status of the mobile communication base station power supply sources. This device was tested in real-world conditions at mobile communication base stations in the Khorezm region of the Republic of Uzbekistan, and the results were analyzed. The created device allows for rapid response to outages at base stations, management of supply sources based on their status, and monitoring of them, thereby increasing the reliability of energy supply sources and extending the life of backup energy supply sources. KEYWORDS- Base Station, Power Supply, Supercapacitor, Battery, Uninterruptible Power Supply, Reliability I. INTRODUCTION Currently, four mobile operators provide their services to subscribers in the Khorezm region of the Republic of Uzbekistan. Due to the relatively scattered location of this area, communication operators are expanding communication coverage using modern technologies. Although the high frequency range allows for high-quality and fast services, it reduces the service distance. Therefore, it is necessary to regularly increase the number of base stations to ensure full coverage of mobile communication networks in the regions [1][2][3]. One of the most important factors for the effective operation of mobile communication systems is the uninterrupted and stable supply of power to base stations. Uninterrupted power supply to base stations increases the quality and reliability of network services. Therefore, various studies are being conducted in developed countries aimed at increasing the energy efficiency of mobile communication infrastructure. Such research is aimed at using alternative energy sources, introducing energy-saving technologies, and developing intelligent control systems, which will not only improve communication quality, but also increase the overall efficiency of the network infrastructure [4][5][6]. II. THE MAIN PART The mobile communication base station can be supplied with electricity through two types of AC and DC power supply sources. AC power sources include local power grids, wind generators, diesel generators, while DC power sources include batteries and solar panels. The parameters of the above energy supply sources are presented in Tables 1 and table 2. Maintaining the parameters of the electricity supplied by the power supply sources within the limits in this table increases the reliability of the base station power supply system and reduces the number of outages. [7][8][9]. Table 1: Parameters of Alternating Current Power Supply Sources for Mobile Communication Base Stations Parameter Limit deviation Nominal voltage, Unom, V 220/380 (230/400) Nominal frequency, Hz 50 The set voltage deviation from the nominal value, %, is not more than 10 -15 Voltage transient deviation, %, not more than 40 The duration of the voltage transient deviation, s, is not more than 3 Transient voltage drop, ms, not more than 10 The set deviation of the frequency from the nominal value, %, is not more than 5 The distortion coefficient of the sinusoidality of the voltage curve, %, is not more than 10 Voltage unbalance coefficient, %, not more than 5 Voltage pulse: Pulse voltage, V, not more than Pulse duration (at 0.5 amplitude level), μs, not more than 1,8 Unom 1300 Voltage pulse: Pulse voltage, V, not more than Pulse duration, μs, not more than 2000 50