TY JOUR TI Reduction of Electric Power Consumption by Freight Mainline Locomotives 2(3)ES5S According to Operational Trial Results KW Freight mainline electric locomotive KW operational trials KW traction discrete-adaptive control KW power-efficient traction mode KW speed automatic controller KW electric power specific consumption reduction JO Bulletin of scientific research results AU Zarif'yan, A.A. AU Shrayber, M.A. PY 2022 IS 2022 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"