Group of three stator windings for a stator of an electric machine, a stator arrangement, a generator, and wind turbine

A group of three stator windings for a stator of an electric machine, wherein

• the stator comprises a first cylindrical surface with a plurality circumferentially spaced winding slots, each winding slot extends along an axial length of the first cylindrical surface and formed to embed a segment of a single stator winding;
• each stator winding is pre-formed as a closed loop, two substantially parallel segments of each stator winding are formed to be embedded in a first and a second winding slot of the stator, with the second winding slot being the third adjacent winding slot to the first winding slot,
• each of the three stator windings includes a first winding head segment extending from the winding slots in axial direction of the stator, and
• the first winding head segment of a first winding of the three stator windings is at least partilly rotated and translated about an axis,
• wherein for the second and the third winding the first and/or the second winding head segments comprises a substantially straight connection between a curvature section within the plane of the first winding slot of the stator and a curvature section within the plane of the second winding slot of the stator, the connection being arranged in a plane substantially perpendicular to the planes of the first and second winding slots;
• and
• wherein the planes of the connections of the second and the third stator windings are out of parallel alignment.