Patent · US Active

Permanent magnet rotor for an electrical machine

US9257890B2 · kind B2 · utility

6Cited by

8References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Ludwig Erd · Berlin, DE
Axel Möhle · Berlin, DE

Key dates

Filing date	Aug 29, 2011
Grant date	Feb 9, 2016
Priority date	—
Expiry date	Sep 30, 2032

Classification

Technology area (CPC H)Electricity
CPC primaryH02K2213/03
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A rotor for an electrical machine has a rotor body and permanent magnets arranged on the circumference of the rotor body, wherein those areas of the circumference of the rotor body which are covered by the permanent magnets have at least one recess and/or that side of the permanent magnets which faces the circumference of the rotor body has at least one recess. Each recess is configured as a slot which extends in parallel relationship to a circumference-proximal side of the permanent magnets. Removably insertable in the recesses are ferromagnetic bars to allow removal of the permanent magnets.

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