TY JOUR TI METHODOLOGY FOR CALCULATING PARAMETERS AND ENERGY CHARACTERISTICS OF ELECTRIC MACHINES WITH A CLOSED LOOP KW active resistance of the stator phase KW submersible electric machines KW number of rotor slots KW energy characteristics KW active resistance of the closed ring KW rod cross section KW resistivity of copper KW rod length JO NATURAL AND MAN-MADE RISKS (PHYSICO-MATHEMATICAL AND APPLIED ASPECTS) AU Bulatova, Y.M. AU Reva, Y.V. PY 2024 IS 2024 PB Saint-Petersburg University of State Fire Service of Emercom of Russia