Stator and electrical machine

摘要

The method for making a stator includes making individual strip-shaped laminas ( 15 ) for it; stacking the laminas ( 15 ) to form a stator core ( 13 ) with grooves ( 18 ) on one side extending through the core; producing a subassembly by inserting a stator winding ( 17 ) into the grooves ( 18 ); bending the subassembly to form a cylindrical cavity so that the grooves ( 18 ) end in the cavity and connecting two ends ( 23 ) of the stator core ( 13 ) to each other by a welding seam ( 20 ) to maintain this configuration. To produce a welding seam of sufficient strength which does not exert excessive influence on magnetic properties, the welding seam depth (T_S) is given by T_S=0.5 mm*(H_yoke/mm-1)±DeltaT_S, wherein H_yoke is yoke height and DeltaT_S is a tolerance value. An electric machine including the stator made by this method is also described.