Synchronous machine, in particular generator for motor vehicle

US6013967A · kind A · utility

Assignee

• Robert Bosch GmbH · DE

Inventors

• Istvan Ragaly · Schwieberdingen, DE
• Juergen Lechner · Lambach, DE
• Alexander Shendi · Asperg, DE
• Hans-Peter Groeter · Leinfelden, DE
• Sylvain Briand · Cardiff, GB
• Alan N. Syrop · Cambridge, GB

Key dates

• Filing date: Jan 26, 1999
• Grant date: Jan 11, 2000
• Expiry date: Jan 26, 2019

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K21/044
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A synchronous machine, in particular a generator for a vehicle, has an excitation system with a plurality of electrically excited individual poles in a rotor, preferably in form of claw poles excited by at least one common excitation coil, in which for compensation of a magnetic stray flux, in the free spaces between the axially oriented claw poles permanent magnets are inserted at the axial ends of the pole plates of the rotor, so that the permanent magnets are supported by a holder against centrifugal forces and held by it, and therefore an especially simple and inexpensive holder is formed which considerably simplifies and facilitates the insertion of the permanent magnets.