Browsing by Author "Danylov, Oleksiy"
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Item Asymmetric Power Supply Circuit Design for Electric Rolling Stock on the Electrified DC Rail(IEEE, 2020) Sychenko, Viktor G.; Danylov, Oleksiy; Bekh, Petro V.; Kosariev, Yevhen; Liashuk, Vitalij; Drubetskaya, TanyaENG: Modern requirements for the traction power supply system of direct current in providing the high-speed movement are reduced to the need of ensuring a normalized voltage level of 2900 V on current collectors of electric locomotives. At the same time, the power supply system has to be stable on changes in power consumption and have the necessary specific energy intensity. The purpose of the work is to explain the transition to a new circuit design of the traction network using additional generators of electric energy. The proposed asymmetrical power supply system of the electric rolling stock allows to provide the required voltage level on the electric locomotive current collectors, to reduce the range of its changes and to reduce the power losses by 14.3% compared to the symmetrical centralized power supply circuit design with passive boosting of the traction network.Item Increased Controllability of the Distributed Traction System in Emergency Mode(IEEE, 2020) Sychenko, Viktor G.; Antonov, Andrii V.; Liashuk, Vitalij; Rudevich, Nataliia; Belukhin, Dmitry; Danylov, Oleksiy; Kosariev, Yevhen; Bozhko, VladimirEN: The puprose of the work is to improve approaches to the controllability of power consumption in distributed power systems of electric rolling stock using modern technologies and equipment. Unequal energy consumption on the shoulders of the power supply causes additional losses in the system and makes the voltage mode worse on the current collectors of electric locomotives. To increase the controllability of operation modes, is proposed to use feeder volt-additional converters with arcless commutation of short-circuit currents. Using such converters allow to stabilize the voltage on the current collectors of electric locomotives and reduce the switching-off time. Variant calculations using the proposed circuit engineering of traction substations on the simulation model prove that the power losses from the equalizing currents are significantly reduced