Siemens Aktiengesellschaft

Innomotics Gmbh

Matthias Centner

Marco Festa

Ilja Sabelfeld

Matthias Johannes Burghard

Andreas Bethge

Patrick Gels

Rüdiger Schäfer

Jörg Waschek

Elias Kaufhold

Rudiger Schafer

Jorg Waschek

A stator for a rotating electric machine includes a laminated core, and an electrically conductive winding including a winding top layer with electrically conductive top bars, and a winding bottom layer with electrically conductive bottom bars. Each groove of a stator segment of the laminated core has arranged therein a top bar and a bottom bar in adjacent relationship. The top and bottom bars protrude out of the grooves. A connecting element connects a free end of a top bar to a free end of a bottom bar of an adjacent stator segment and includes an inclined section to connect two ends of the connecting element. The ends are angled relative to the inclined section. One end of the connecting element is connected to the free end of the bottom bar and the other end of the connecting element is connected to the free end of the top bar.

Stator for a rotating electrical machine

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.

Cooling of an active part of an electric machine

An electric machine has grooves and windings, divided into strands, of electrical conductors. At least one strand has a number s of coils connected in series and arranged in the grooves. Each coil has sub-conductors connected in parallel and arranged in bundles. Each bundle is arranged in a groove at a bundle position relative to a deepest possible bundle position in the groove. The positions of all bundles in all coils define a number b of possible bundle positions of the strand. The bundles are interchanged between the coils such that each bundle is arranged in the grooves at least n times and at most n' times at each possible bundle position, wherein n is the integer quotient in regard to the quotient of the number s and the number b, wherein n&#x2032;=n if s is divisible by b and n&#x2032;=n+1 if s is not divisible by b.

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Berlin, Germany

Matthias Centner