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Information × Registration Number 0224U002875, 0121U109440 , R & D reports Title Development of scientific bases for improving energy efficiency and improving the quality of electricity in electricity networks popup.stage_title Head Plakhtii Oleksandr A., Кандидат технічних наук Registration Date 08-03-2024 Organization Ukrainian State University of Railway Transport popup.description2  The object of research: processes and technologies for improving energy efficiency and power quality indicators of power supply systems with energy-saving semiconductor converters, renewable sources and energy-intensive energy storage devices. The subject of research: semiconductor converters electricity, their automatic control systems, power quality parameters and energy efficiency indicators of power supply systems. The purpose of research: creation of scientific foundations and practical recommendations for increasing energy efficiency and improving electricity quality indicators in the power supply system due to the use of modern semiconductor converters. Research methods and equipment: fundamental provisions of the theory of electric circuits, mathematical, simulation and physical modeling for calculations of electromagnetic processes, physical experiment for experimental verification of the obtained theoretical results were used to solve the tasks; the reliability of the results is confirmed by comparing the results of calculations according to the proposed methods, the results of simulation modeling using the developed models and experimental studies. Results and their novelty: technical solutions have been obtained that ensure the saving of electricity in power supply lines due to the compensation of higher harmonics of currents, voltage and reactive component power, as well as compliance of quality indicators of electricity in Ukrainian electrical networks with international standards; mathematical models and analytical dependencies have been created that describe the relationship between power quality indicators and quantitative indicators of power loss and efficiency of the power supply system, taking into account network load asymmetry modes, the presence of higher harmonics of currents and voltages, as well as the reactive power component; simulation models of the operation of semiconductor converters were developed. Product Description popup.authors Hordiienko Denys A. El Kassem Olena V. Korostelov Yevhen M. Lovska Alona O. Mashura Artem V. Miamlin Sergii S. Nedilko Hanna R. Nerubatskyi Volodymyr P. Plakhtii Oleksandr A. Podnebenna Svitlana K. Syniavskyi Andrii V. Filipieva Maryna V. Kharin Ruslan O. Khoruzhevskyi Hryhorii A. Tsybulnyk Vladyslav R. Shelest Dmytro A. Shkurpela Oleksandr O. popup.nrat_date 2024-03-08 Close