Liquid cooled stator winding for a rotary electric machine having reduced thermal elongation stresses

摘要

A liquid cooled stator winding of a rotary electric machine comprising a stator bar which is composed of a plurality of hollow conductive elements and disposed within a slot of a stator core, and a liquid coolant header fixedly mounted on one end of the stator bar by heat welding. The stator bar is bent adjacent its end in a direction generally normal with respect to its longitudinal direction so as to serve trouble-free over long years of machine operation.