Rotierende elektrische Maschine mit permanenterregtem Rotor

摘要

The invention relates to a rotating electric machine comprising a rotor that is excited by permanent magnets in which the tubular, good heat conducting support body of the stator forms a thermal bridge to a cooling medium. In order to be able to effectively cool the end windings of the stator windings, a thermal bridge which completely occupies the space between the end windings and the support body of the stator is also allocated to each end winding. This thermal bridge is solid and is comprised of a solid material ring which is connected to the support body of the stator in a non-positive manner, and of a cast resin body which is poured into said solid material ring. This cast resin body comprises a thermal conductivity of greater than 1.6 W/m DEG K and, to this end, contains a powdery, good heat conducting filling material provided in a quantity ranging from 50 to 90 wt. %, preferably an aluminum nitride coated with silicon dioxide.