SUBMERSIBLE INDUCTION MOTOR STATOR Russian patent published in 2003 - IPC

FIELD: electrical engineering; motor-pump units for oil wells. SUBSTANCE: stator of induction motor characterized in high length-to-diameter ratio and used for driving submersible pumps is of shorter length and has core, slots, and single-turn winding. Core has twelve slots with design width proportion of tooth disposed between slots as function of slot back thickness for 2P = 2. Tooth width is found from formula where b_t is tooth width, cm; P is number of pole pairs (2P = 2); z is number of core slots (z = 12); B_s is flux density of stator slot back, T; B_t h_b is slot back thickness, cm. EFFECT: enlarged service life; enhanced power output at same size. 1 cl, 5 dwg, 2 tbl