ASYNCHRONOUS ELECTRIC MOTOR ROTOR Russian patent published in 2007 - IPC H02K17/18 H02K17/16 

FIELD: electric engineering, namely, asynchronous electric motors with short-circuited rotor winding.

SUBSTANCE: shorted rotor of asynchronous electric motor contains a core with grooves, shorted winding with working and launching cells, where launching cell is made in form of inserted conductors of material with lesser specific electric conductance compared to working cell and shorting rings. In accordance to the invention, launching cell is made only of aforementioned inserted conductors and its length does not exceed the length of rotor magnetic wire, and working cell in each groove of magnetic wire of rotor only has one-sided contact with launching cell along whole length of inserted conductor, where working cell and shorting rings are cast copper, and inserted conductors of launching cell along their length are made in form of parts made of materials with varying specific electric conductance.

EFFECT: improved electromagnetic characteristics of asynchronous electric motor in repeating short term modes with simultaneously reduced industrial costs due to simplification of manufacturing technology for shorted rotor and economy of materials.

6 cl, 4 dwg