Rotor for rotary electric machine, manufacturing method and corresponding rotary electric machines

A rotor for rotary electric machine, comprising:

• a package of plates, wherein each package of plates of the rotor comprises, at both ends or end sections thereof, at least one first inverted plate and at least one last inverted plate, said plates being inverted in relation to other plates of the package of plates;
• wherein the at least one first inverted plate and the at least one last inverted plate are positioned so as to physically cover and seal channels formed by upper holes of the other plates to prevent any conductive material injected into lower holes from migrating into the upper holes during manufacturing;
• wherein the upper holes of the other plates are arranged in an off-centered, offset or mirrored manner relative to a central radial shaft of the lower holes, such that the lower holes remain aligned throughout the package of plates;
• and
• wherein the upper holes are filled with an insulating material, and the lower holes are filled with a conductive material.