Patent ID: 8076817

Claim:
A multiphase synchronous electrical machine for converting kinetic energy into electrical energy and electrical energy into kinetic energy on board a transport vehicle; the electrical machine comprising: a rotor extending along an axis, and a stator including: a stator pack having slots; and an electrical winding extending in part in the slots and in part at to two heads arranged on opposite sides of the stator pack, the electrical winding comprising bars housed in the slots and connected to one another at the heads; the electrical winding further comprising connection plates welded to the bars in a position corresponding to the heads, the connection plates being packed with respect to one another and to the stator pack in an axial direction, the connection plates further being shaped in such a way as to define an axial prolongation of the stator pack, each of the connection plates having: two substantially parallel faces set substantially transverse to the axis; a thickness defined in the axial direction and between the two substantially parallel faces, wherein the thicknesses of the connection plates vary between a maximum thickness at least near the stator pack and a minimum thickness at least near a free end of each of the heads; and an average height in a radial direction, wherein the average heights of the connection plates vary between a maximum average height at least near the free end of each of the heads and a minimum average height at least near the stator pack.