Robert Boschgmbh

Steven Andrew Evans

Max Seitter

Armin Stubner

Andreas Ewert

Susanne Evans

Norbert Martin

Lin Feuerrohr

Dirk Buehler

Fengmei Cheng

Milorad Risticevic

Jan Schlegel

Michel Dietrich

The invention describes an electrical machine comprising a stator and a rotor which is separated from the stator by an air gap and has a plurality of shell-like magnet segments which are fastened to a magnetic return path element. In this case, the magnet segments are arranged opposite one another in pairs in each case and each have a plurality of magnetically differently polarized sections in the circumferential direction, said sections each forming a magnetic pole of the rotor. In this case, recesses which each serve as outer detached pole portions are provided on that side which faces the stator in the edge zones of the magnet segments which are arranged in the circumferential direction. Furthermore, further recesses are provided on that side which faces the stator in the transition zones between the magnetically differently polarized sections of the magnet segments, said recesses serving as inner detached pole portions.

Electrical machine with reduced cogging and torque ripple

The invention relates to a method for producing a machine component () for an electrical machine, wherein the machine component () is formed with a magnetically conductive material, in which one or more magnetically nonconductive separating regions () are provided, wherein the separating region () is formed by the introduction of austenite-forming material during a melting process of the magnetically conductive material of the machine component (), such that an austenitic structure is formed in the magnetically conductive material of the machine component ().

Method for producing a machine component for an electrical machine, machine component and electrical machine

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.

Electric machine and rotor arrangement

A main element which can be used as a rotor or stator for an electrical machine has a short-circuit ring and radially protruding teeth formed integrally onto the short-circuit ring, which teeth are offset from one another about circumferential angles. To make it possible to press a main element of relatively great axial length of SMC material with the required high material density, the SMC body is subdivided into a plurality of separately manufactured modules, placed against one another in axially aligned fashion, two each of which modules are embodied identically and on being placed against one another are rotated 180&#xb0; in the plane defined by the module axes. Each separately pressed module, to achieve the required density, has a high aspect ratio, and for pressing the plurality of modules, only two press molds are required.

Main element for an electrical machine

The invention relates to a stator for an electric machine, which has a core comprised of laminated sheet metal (), the pole teeth () of each laminated sheet metal () of the core being connected to one another via respective webs (). The laminated metal sheets () of the core are made from a two-state steel and, in the area of the pole teeth (), have a high relative permeability and, in the area of the webs (), have a section () with a low relative permeability.

Growing community of inventors

Buehl, Germany

Steven Andrew Evans