Rotor for a rotating electric machine and rotating electric machine

Patent metadata

Field	Value
Publication number	US-9634526-B2
Application number	US-201314373605-A
Country	US
Kind code	B2
Filing date	Jan 23, 2013
Priority date	Jan 26, 2012
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Continental Automotive Gmbh

Inventors

• Bulatow Michael
• Welke Knut

Classifications

• C22C38/40 Primary

  with nickel · CPC title

• C22C38/02

  containing silicon · CPC title

• H02K1/02 Primary

  characterised by the magnetic material · CPC title

• C22C38/04

  containing manganese · CPC title

• H02K11/21

  Devices for sensing speed or position, or actuated thereby (specially adapted for machines having non-mechanical commutating devices H02K29/06, H02K29/14) · CPC title