TY JOUR TI Development of a “Lastochka” electric train digital model to analyze its traction and energy characteristics in the SimInTech environment KW electric train digital model KW traction calculations KW electric train energy performance KW traction rolling stock modeling in SimInTech JO Proceedings of Petersburg Transport University AU Sychugov, A.N. PY 2026 IS 23 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"