METHOD FOR MANUFACTURING OF INDUCTION ELECTRIC MOTOR AND INDUCTION ELECTRIC MOTOR WITH SQUIRREL-CAGE ROTOR Russian patent published in 1999 - IPC

FIELD: electrical engineering, in particular, use of induction motors. SUBSTANCE: magnetic circuit of squirrel-cage rotor of induction electric motor is designed as laminated sets with vertical or inclined slots, which contain rods of squirrel-cage winding, which are connected by means of external short-circuited rings and have intermediate short-circuited rings which are located between laminated sets. Number of slots in middle set is equal to number of slots in extreme sets. One external short-circuited ring has greater cross section and another one lesser cross section than cross sections of intermediate short-circuited rings which are equal in size. Invention discloses method for manufacturing such electric motor. EFFECT: improved technical characteristics, in particular, starting momentum and heavy slipping momentum, low noise, simplified manufacturing. 26 cl, 1 dwg