Patent · US Expired

Electrical machine

US6867530B2 · kind B2 · utility

28Cited by

8References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Oliver Gamm · Eislingen/Fils, DE
Falko Winter · Ludwigsburg, DE
Alexander Shendi · Asperg, DE
Hans-Peter Groeter · Leinfelden, DE
Jerome Debard · Cardiff, GB

Key dates

Filing date	Dec 18, 2001
Grant date	Mar 15, 2005
Priority date	—
Expiry date	Dec 18, 2021

Classification

Technology area (CPC H)Electricity
CPC primaryH02K21/044
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Electrical machine, in particular an alternator for a motor vehicle, with a housing (4) and a rotor (10) that is supported, in the housing (4), in a manner that allows it to rotate around a rotation axis (12), the rotor having at least one rotor winding (14), a plurality of claw poles (17) disposed circumferentially, whereby adjacent claw poles (17) have axial claw overlap LÜ and permanent magnets (28) have axial magnet length LM, whereby at least one permanent magnet (28) is located between every two adjacent claw poles (17) and is magnetized so as to suppress leakage flux between the claw poles (17), wherein the following applies for the ratio of axial magnet length LM to axial claw overlap LÜ: LM/LÜ≧0.81.

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