STATOR OF ELECTRICAL MACHINE Russian patent published in 1999 - IPC

FIELD: electrical engineering, in particular, cooling systems of closed-design electrical machines to be used in power production, tool making and instrument making equipment, and agriculture. SUBSTANCE: device has finned cylindrical housing, core, pouring stator winding 5 with front members, cooling members with axial cuts, each of which has cylinder which is located between housing and front members of winding, and disk which is mounted in radial direction and covers front winding members from ends. Goal of invention is achieved by design of cooling members disks, which are removable, and by design of cooling members, each of which is equipped with four Peltier elements, which are connected to external direct current power supply, and are arranged in pairs on external surface of cylinder in relatively perpendicular planes. In addition one surface of each Peltier element is adjacent to cylinder of cooling member, while another radial disk increases heat-emitting surface of each cooling member in axial direction as well as balances temperature inside cooling member of stator winding. EFFECT: increased efficiency of stator winding cooling with respect to passive cooling systems, increased reliability of operations, longer service life of electric motor, at least by factor of two-three, automatic control of heating mass-production induction motors for industry and agriculture. 3 dwg