C-SHAPED OR U-SHAPED HALF-COIL, ROTOR WINDING WITH SUCH A HALF-COIL AND ITS MANUFACTURING METHOD

摘要

The present invention relates to a winding (20) of a rotor of a rotating electrical machine, in particular, to C-shaped or U-shaped half-coils (8,8') used for the winding (20) of such a rotor after the re-winding operation. Moreover, the invention pertains to a method of a winding of an electrical machine rotor which comprises a reduced axial length due to the re-winding. According to preferred embodiments of the invention, said half-coils (8,8'), instead of being manufactured as double hollow conductors, are provided in the form of two single hollow conductors (9,10) which comprise a single hollow each and which are adjacently embedded within a respective slot of the rotor body.