US 11,837,933 B2
Process for making an electric conductor for a winding of an electric machine, electric conductor made with such process and electric machine comprising a winding made with such electric conductor
Andrea Tonino, Pont-Saint-Martin AO (IT); and Luca Favre, Pont-Saint-Martin AO (IT)
Assigned to MAVEL EDT S.P.A, Point-Saint-Martin (IT)
Appl. No. 17/784,780
Filed by MAVEL EDT S.P.A., Pont-Saint-Martin (IT)
PCT Filed Dec. 31, 2019, PCT No. PCT/IT2019/000123
§ 371(c)(1), (2) Date Jun. 13, 2022,
PCT Pub. No. WO2021/137260, PCT Pub. Date Jul. 8, 2021.
Prior Publication US 2023/0008528 A1, Jan. 12, 2023
Int. Cl. H02K 3/42 (2006.01); H02K 3/34 (2006.01); H02K 15/10 (2006.01); H02K 15/12 (2006.01)
CPC H02K 3/42 (2013.01) [H02K 3/34 (2013.01); H02K 15/105 (2013.01); H02K 15/12 (2013.01)] 11 Claims
OG exemplary drawing
 
1. Process for making an electric conductor for a winding of an electric machine comprising the following steps:
a step of providing an external shell (20) with a tubular shape made of electrically conducting material;
a step of inserting in the external shell (20) at least two wires (21) made of electrically conducting material;
a step of heating the external shell (20) and the wires (21) inserted therein, the step of heating the external shell (20) and the wires (21) inserted therein performed at a temperature included between 500° C. and 600° C.;
a step of laminating the external shell (20) with the wires (21) inserted therein, wherein the external shell (20) and the wires (21) are formed to modify the profile of their cross section;
an optional step of repeating at least one of the two previous steps.