Siemens Aktiengesellschaft

Ilja Sabelfeld

Marco Festa

Matthias Centner

Matthias Johannes Burghard

Andreas Bethge

Elias Kaufhold

The invention relates to a fluid-cooled active part () for an electric machine (), wherein the active part () is substantially cylindrical or hollow cylindrical, having axially extending grooves (), at least one electrical conductor (), which is arranged in the associated groove () at least in some sections and which is composed of a plurality of partial conductors (), one or more main insulators (), each arranged between the associated conductor () and the associated groove (), and partial-conductor insulators (), each surrounding the associated partial conductor (). The invention further relates to an electric machine (), having such a fluid-cooled active part () designed as a stator () and/or such a fluid-cooled active part () designed as a rotatably mounted rotor (), wherein the electric machine () can be operated with a voltage in the range of at least a few kilovolts, preferably a few tens of kilovolts. Finally, the invention relates to a drive System (), having such an electric machine () and a fluid energy machine () for the fluid, wherein the fluid energy machine () is designed as a compressor, in particular for process gas, or as a pump, in particular for a process liquid. In order to provide, among other things, a high-performance fluid-cooled active part that is compact and, in particular, resistant in the environment of the fluid or of a process fluid, it is proposed, among other things, that the active part () has one or more cooling Channels () for conducting the fluid, in particular a process fluid, wherein each cooling Channel () is arranged between the associated main insulator () and the respective partial-conductor insulators ().

Fluid-cooled active part, electric machine, and drive system

A rotor for an electric rotating machine, in particular a synchronous machine includes a shaft that can rotate about an axis of rotation, and at least one pole shoe. In order to improve vibration properties, the pole shoe includes a pole shoe body and a pole shoe sheet metal which rests on a radially outer surface of the pole shoe body.

Rotor for an electric rotating machine

An active part of an electric machine includes at least two teeth, each having a magnetically permeable material and protruding from a lateral surface of the active part in a radial direction. Each tooth has an open recess in a plane spanned by a substantially radial direction and a direction substantially along an axis of rotation. A winding groove is arranged between the two teeth substantially along an axis of rotation of the active part for receiving an electrical winding. Arranged at least partially in the open recess is a thermally conductive element having a thermally conductive material with a thermal conductivity which is greater than a thermal conductivity of the magnetically permeable material.

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Berlin, Germany

Ilja Sabelfeld