Patent · US Active

Electric machine and rotor arrangement

US8513850B2 · kind B2 · utility

4Cited by

0References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Susanne Evans · Laufenburg (Baden), DE
Steven Andrew Evans · Laufenburg (Baden), DE

Key dates

Filing date	Aug 20, 2008
Grant date	Aug 20, 2013
Priority date	—
Expiry date	Nov 10, 2029

Classification

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

Abstract

The invention relates to an electric machine excited by a permanent magnet. The electric machine comprises a rotor arrangement having buried permanent magnets and a stator arrangement having an inner recess for rotationally movably receiving the rotor arrangement, the rotor arrangement comprising a plurality of rotor segments, each having a pole shoe, the outer contour thereof corresponding to an arc contour having a contour radius, the contour radius being smaller than the radius of the rotor arrangement, thus forming a gap between two adjacent rotor segments, the at least one outer contour of one of the rotor segments having an arc contour, wherein the dimensions of the contour are optimized with regard to the distortion factor of the course of the flux density distribution of the pole shoe.

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