Integration of Renewable Energy Sources into the DC Traction Power Supply System. - Iliev, Iliya; Kryukov, Andrey; Suslov, Konstantin; Cherepanov, Aleksandr; Kryukov, Aleksandr; Beloev, Ivan; Valeeva, Yuliya; Beloev, Hristo (Energies (19961073), 2026)