Method and apparatus for cooling a winding in the rotor of an electrical machine

摘要

Means for cooling a winding in the rotor of an electrical machine that is cooled by a flow of liquefied gas. The winding is covered by a heat conductive sheath that transfers the heat developed in the winding to a pool of the liquefied gas. The winding and conductive sheath are insulated by a thermal shield from sources of heat exterior to the winding. The winding and the conductive sheath have a support structure that is provided with cooling channels through which the liquefied gas flows. These channels allow the other components of the rotor to be cooled independently from the winding.