TY JOUR TI Calculation Method for Determining Losses in Electric Locomotive Asynchronous Traction Motor under Changing Load KW Electric locomotive KW asynchronous traction drive KW energy efficiency under changing load KW calculation method for determining losses in an asynchronous traction motor JO Bulletin of scientific research results AU Zarif'yan, A.A. AU Kolpahch'yan, P.G. PY 2023 IS 2023 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"