Alstom (switzerland) Ltd

Ren&eacute;-Louis Leyvraz

Francesco Stallone

In a generator with an indirectly gas-cooled, in particular air-cooled, stator winding ( ), the end regions of the stator bore ( ) are to be designed in such a way that the conductor bars are shielded as effectively as possible by the laminated stator core ( ) against magnetic fields inducing eddy currents, but, on the other hand, a specific radial dimension between the rotor retaining ring ( ) and the laminated stator core ( ) is ensured. According to the invention, for this purpose, the end region of the stator bore is designed with four axial zones having a different diameter profile. A first zone (I) is the interior of the stator with the constant nominal stator bore diameter (D ). Toward the end face of the stator is arranged a second zone (II) with a stator bore diameter (D ) widening toward the end face. The stator bore widens, there, to the diameter of a third zone (III) with an at least approximately constant diameter (D ), this diameter, on the one hand, being large enough to ensure a necessary distance from the rotor retaining ring, but continuing to ensure a good overlap over the stator conductor bars by the laminated core.

Growing community of inventors

Lupfig, Switzerland

René-Louis Leyvraz

Growing community of inventors

Lupfig, Switzerland

Ren&eacute;-Louis Leyvraz

René-Louis Leyvraz