Patent · US Active

Method for production of a soft-magnetic core having CoFe or CoFeV laminations and generator or motor comprising such a core

US8887376B2 · kind B2 · utility

2Cited by

80References

25Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Joachim Gerster · Alzenau, DE
Witold Pieper · Frankfurt, DE
Rudi Ansmann · Alzenau, DE
Michael Koehler · Oberlungwitz, DE
Michael Von Pyschow · Hanau, DE

Key dates

Filing date	Jul 18, 2006
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Feb 3, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49078
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a method for the production of a soft magnetic core for generators and generator with a core of this type. To produce a core, a plurality of magnetically activated and/or magnetically activatable textured laminations is produced from a CoFeV alloy. This plurality of laminations is then stacked to form a core assembly. Then the core assembly, if consisting of magnetically activatable laminations, is magnetically activated. Finally, the magnetically activated core assembly is eroded to produce a soft magnetic core. A core of this type is suitable for a generator with a stator and a rotor for high-speed aviation turbines, the laminations in the core assembly being oriented in different texture directions relative to one another.

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