Method of manufacturing a rotary electric machine and a rotary electric machine

A rotating electric DC machine with a rotor rotatably mounted in a stator (1) and with a number of main poles (3) with their respective main coils (4), whereby the main poles are equipped with axial, with respect to the physical axis of the machine, slots (7) and with a compensating winding (8) arranged in the slots and whereby slots (7) for compensating winding (8) are shifted radially outward, so that at least parts of them and compensating winding (8) placed in them are arranged radially outside the radially inner parts of the axially long sides of the respective main coils (4), characterized in that the axial coil ends (4A) of main coils (4) have an outwardly tapering cross section, so that the coil ends are made with an extended shape that is radially thinner than that of the other parts of the coil and/or the axial ends (4A′) of main coils (4) are bent radially outward, i.e. in the direction away from the center (C) of stator (1), as a complement or as an alternative.

A process for producing a stator (1) for a rotating electric DC motor, whereby the stator is equipped with a number of main poles (3) with respective main coils (4) and the main poles are provided with slots (7), axially arranged with respect to the physical axis of the machine, for a compensating winding (8), and slots (7) for compensating winding (8) are radially shifted outward so that at least parts of the latter are arranged radially outside the radially inner parts of the axial long sides of the respective main coil (4), characterized in that the axial coil ends (4A) of main coils (4) are made with an outwardly tapered cross section, whereby the coil ends are given an extended shape that is radially thinner than the other parts of the coil and/or the axial coil ends (4A′) of main coils (4) are bend radially outward, i.e. in the direction away from the center (C) of stator (1), as a complement or as an alternative.

A stator (1) for a rotating electric DC machine with a number of main poles (3) with their respective main coils (4), whereby the main poles are equipped with axial, with respect to the physical axis of the machine, slots (7) and with a compensating winding (8) arranged in the slots and whereby slots (7) for compensating winding (8) are shifted radially outward, so that at least parts of them and compensating winding (8) placed in them are arranged radially outside the radially inner parts of the axially long sides of the respective main coils (4), characterized in that the axial coil ends (4A) of main coils (4) have an outwardly tapering cross section, so that the coil ends are made with an extended shape that is radially thinner than that of the other parts of the coil and/or the axial ends (4A′) of main coils (4) are bent radially outward, i.e. in the direction away from the center (C) of stator (1), as a complement or as an alternative.