TY JOUR TI Defining Resistance in Traction Motor Circuit According to Microprocessor Control System Data KW Traction drive circuit chain KW electric losses in traction drives KW traction drive efficiency KW traction drive JO Bulletin of scientific research results AU Kurilkin, D.N. AU Grachev, V.V. AU Tanaev, V.F. PY 2022 IS PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"