Rotor for a rotating electric machine and rotating electric machine
View Patent ↗A rotor for a rotating electric machine includes a rotor sheet stack arranged on a rotor shaft, and at least one metallic functional component made of a material comprising iron and also chromium in a proportion of at least 18% and at most 19% by weight and optionally nickel in a proportion of at least 12% and not more than 13% by weight.
1. A rotor for a rotating electric machine, the rotor comprising:
a rotor laminated core arranged on a rotor shaft, and
at least one metallic functional component constructed from a material comprising:
iron, and
chromium in a proportion of between 18% and 19%, inclusive, by weight.
2. The rotor of claim 1 , wherein the material of the at least one functional component also includes nickel in a proportion of between 12% and 13%, inclusive, by weight.
3. The rotor of claim 1 , wherein the at least one functional component comprises a balancing element.
4. The rotor of claim 1 , wherein the at least one functional component comprises an encoder wheel of a rotor position encoder.
5. The rotor of claim 1 , wherein the rotor comprises a rotor of an externally excited synchronous machine and comprises:
a plurality of pole teeth, each supporting an exciter winding; and
grooves formed between each adjacent pair of the pole teeth.
6. The rotor of claim 5 , wherein the at least one functional component comprises a winding head cover of each exciter winding.
7. The rotor of claim 5 , wherein each functional component comprises a groove wedge arranged in a respective groove to close off the groove from an outside area.
8. The rotor of claim 5 , wherein each exciter winding is surrounded by a casting compound.
9. The rotor of claim 5 , wherein the grooves define cavities that are cast essentially completely with a casting compound.
10. A rotating electric machine, comprising:
a rotor comprising:
a rotor laminated core arranged on of rotor shaft, and
at least one metallic functional component constructed from a material comprising:
iron,
chromium in a proportion of between 18% and 19%, inclusive, by weight.
11. The rotating electric machine of claim 10 , wherein the material of the at least one functional component of the rotor also includes nickel in a proportion of between 12% and 13%, inclusive, by weight.
12. The rotating electric machine for of claim 10 , wherein the at least one functional component of the rotor comprises a balancing element.
13. The rotating electric machine of claim 10 , wherein the at least one functional component of the rotor comprises an encoder wheel of a rotor position encoder.
14. The rotating electric machine of claim 10 , wherein the rotating electric machine comprises an externally excited synchronous machine, and wherein the rotor comprises:
a plurality of pole teeth, each supporting an exciter winding; and
grooves formed between each adjacent pair of the pole teeth.
15. The rotating electric machine of claim 14 , wherein the at least one functional component rotating electric machine comprises a winding head cover of each exciter winding.
16. The rotating electric machine of claim 14 , wherein each functional component rotating electric machine comprises a groove wedge arranged in a respective groove to close off the groove from an outside area.
17. The rotating electric machine of claim 14 , wherein each exciter winding rotating electric machine is surrounded by a casting compound.
18. The rotating electric machine of claim 14 , wherein the grooves rotating electric machine define cavities that are cast essentially completely with a casting compound.