TY JOUR TI Using of functional generators with asymmetrical failure for AC electric drive control KW functional generator KW electric drive KW three-phase induction motor KW safe control KW inverter KW bridge circuit KW efficiency coefficient KW pulse-width modulation KW insulated gate transistors KW compact relay KW mechanical circuit opening JO Transport automation research AU Nikitin, A.B. AU Kovkin, A.. PY 2016 IS PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"