Patent · US Active

Dynamoelectric rotary machine with elements for reducing tonal noises

US11539275B2 · kind B2 · utility

0Cited by

4References

4Claims

0Family size

Assignee

Siemens Mobility GmbH · DE

Inventors

Jens Brand · Tann, CH
Andreas Gruenthaler · Nuremberg, DE
Mario Krebs · Greding, DE
Thomas Schmidt · Braunschweig, DE

Key dates

Filing date	Jul 19, 2019
Grant date	Dec 27, 2022
Priority date	—
Expiry date	Jun 8, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2205/12
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A dynamoelectric rotary machine includes a stator, which has a winding system arranged in grooves disposed between teeth of a magnetically conductive body and a winding head on the end faces of the stator in each case. A rotor with a cage ring is arranged rotatably about an axis and during operation of the dynamoelectric rotary machine is in electromagnetic interaction in a motor-driven or generator-driven manner with the winding system of the stator arranged in the grooves by way of an air gap. Comb-type elements are disposed on the end faces of the stator. The comb-type elements assume an extensive intermediate space between the winding system projecting from the end faces of the stator, so that tonal noises which are produced during operation of such an electric machine are at least reduced.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.