Method for producing a stator winding of an electric machine, in particular an AC generator

A method for producing a stator winding (18) of an electrical machine (10), the method comprising:

• providing a number (n) of phase windings (120, 121, 122, 123, 124), each one of the phase windings having a plurality of partial phase windings (120a, 121a, 122a, 123a, 124a;
• 120b, 121b, 122b, 123b, 124b;
• 120c, 121c, 122c, 123c, 124c;
• 120d, 121d, 122d, 123d, 124d), each one of the plurality of partial phase windings (120a, 121a, 122a, 123a, 124a;
• 120b, 121b, 122b, 123b, 124b;
• 120c, 121c, 122c, 123c, 124c;
• 120d, 121d, 122d, 123d, 124d) having a plurality of directly successive wound coils (82), the plurality of directly successive wound coils (82) including at least a first coil (82.1) and a second coil (82.2), each one of the first and second coils (82.1, 82.2) having respective coil sides (88) and coil side connectors (91);
• providing a shaping tool (100) with a lower part (101) including slots (105) and an upper part (102) including slots (106), said slots of the respective lower and upper parts (101, 102) being situated opposite one another, such that the slot pairs (105, 106) situated opposite one another form respective common spaces, each of the common spaces being adapted to receive one of the plurality of directly successive wound coils (82);
• positioning a first coil (82.1a) from a first one of the plurality of partial phase windings (120a), including all the coil sides (88.1a, 88.2a, 88.3a, 88.4a) thereof, in one of the common spaces formed by a first one of the slot pairs (105, 106);
• positioning a second coil (82.2a) from the first one of the plurality of partial phase windings (120a), including all the coil sides (88.1a, 88.2a, 88.3a, 88.4a) thereof, in another one of the common spaces formed by a second one of the slot pairs (105, 106) such that the number of slots (105, 106) between the first coil (82.1a) and the second coil (82.2a) of the first one of the plurality of partial phase windings (120a) is one less than the number (n) of phase windings of the stator winding (18);
• positioning an other first coil (82.1b) from an additional one of the plurality of partial phase windings (120b), including all the coil sides (88.1b, 88.2b, 88.3b, 88.4b) thereof, into the one of the common spaces formed by the first one of the slot pairs (105, 106) alongside the first coil (82.1a) of the first one of the plurality of partial phase windings (120a);
• and
• displacing the upper part (102) relative to the lower part (101).