Siemens Aktiengesellschaft

André Trepper

Konrad Brandl

Maximilian Pfaller

Siegfried Fichtner

Patryk Piotrowski

Christian Deeg

Uwe Scharf

Johannes Grosshauser

The invention relates to a squirrel-cage rotor of an asynchronous machine (), comprising conductors () in grooves () of a magnetic field-conducting rotor, and electrically conducting rotor end rings () which are located in the region of the end faces of the magnetic field-conducting rotor, electrically connect the conductors () and have at least two materials that conduct electricity differently.

Hybrid squirrel-cage rotor

A rotor for an electric machine includes a laminated core and a groove which extend in axial direction from a first axial end to a second axial end along a rotation axis. The groove has a groove filling having a first material with a metal element of the periodic table. The groove filling has a cast metal region, which extends with an end region at the first axial end at least partially over the laminated core. The cast metal region extends through the groove from the first axial end to the second axial end, and fills up a first part of the groove with a first material. An insert fills up a second part of the groove with a second material which has the metal element of the periodic table. The insert part and the cast metal region are connected in a bonded manner by a connection zone.

Rotor having an insert

A cage rotor for an electric machine, has a laminated rotor core having a groove, a rotor end ring that is cast on to one axial end of the laminated core and has a first material and a bar situated in the groove and supported by a deformable bearing having a bearing device. A laminated rotor core for a cage rotor includes a groove and a bearing device, an electric machine with a cage rotor, a method for producing a laminated rotor core by producing a bearing device on the laminated rotor core, and a method for producing a cage rotor by supporting a bar in a groove by a deformable bearing having a bearing device.

Cage rotor comprising a deformable bearing

A cage rotor for an electrical machine includes a rotor laminated core having a groove, and a short-circuiting ring having a first material and cast onto an axial end of the rotor laminated core. Arranged in the groove is a bar which has a bar end. The bar end penetrates into the first material of the short-circuiting ring and has a plurality of notches to provide the bar end with a greater flexibility.

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Erlangen, Germany

André Trepper