ACTIVE PART COOLED BY FLUID MEDIUM, ELECTRIC MACHINE AND DRIVE SYSTEM Russian patent published in 2019 - IPC H02K3/24 H02K9/19 

FIELD: electrical equipment.

SUBSTANCE: invention relates to the electrical equipment. Active part of the machine is made in the form of a hollow cylinder having axially extending grooves, at least one electric conductor that is located in the corresponding groove and consists of several partial conductors. Main insulation is located between the conductor and the groove. Besides, the insulation surrounds the partial conductor. Cooling channel is located between main insulation and insulation of partial conductor. Main insulation covers the greater part of the bottom and two walls of the groove. In the groove, at least two electric conductors are located one above the other in radial direction. There is a shell of conductor that surrounds it in plane perpendicular to axial direction. At that, both the groove in the zone of the lower electric conductor and the shell of the lower electric conductor are narrowed towards the groove bottom so that the bottom conductor shell is fixed with geometrical closure in the groove bottom direction, and between the bottom of the groove and said shell there remains the first axially passing hollow space for the first inlet channel.

EFFECT: higher reliability.

21 cl, 13 dwg