Rotating electrical machine having a permanent-magnet rotor

US6583532B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Peter Hein · Bamberg, DE
• Juergen Huber · Erlangen, DE
• Juergen Lange · Berlin, DE
• Christian Meyer · Karlsruhe, DE
• Wolfgang Rogler · Erlangen, DE
• Ingo Schuering · Schönewalde, DE

Key dates

• Filing date: Jul 18, 2001
• Grant date: Jun 24, 2003
• Expiry date: Aug 4, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/72
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

In a rotating electrical machine having a permanent-magnet rotor, the tubular, highly thermally conductive supporting body of the stator forms a thermal bridge to a cooling means. In order to allow the end windings of the stator windings to be cooled effectively as well, the end windings also each have an associated thermal bridge, which completely fills the space between the end windings and the supporting body of the stator. This thermal bridge is of solid construction having a solid ring, which is connected to the supporting body of the stator with a force fit, and a cast-resin body which is cast into this solid ring. The cast-resin body has a thermal conductivity of more than 1.6 W/mK and, for this purpose, contains a powdery, highly thermally conductive filler making up a proportion of 50 to 90% by weight, preferably an aluminum nitride coated with silicon dioxide.