Siemens Aktiengesellschaft

Rolls-royce Deutschland Ltd & Co. Kg

Korbinian Petermaier

Rolf Vollmer

Ralf Fischer

Marco Köhler

Marco Schramm

Matthias Dorfner

Roland Zeichfüssl

Marco KÖHLER

An active part for an electric machine can be configured as a stator or a rotor and includes at least two slots for arranging an electric coil winding of an electric coil. Arranged between the two slots is a crosspiece which is made of a material for conducting a magnetic flux through the electric coil which surrounds the crosspiece. The material has, at least in one area, magnetic anisotropy with an easy magnetization axis, which is oriented parallel or at least at an angle of less than 25&#xb0; with respect to a coil axis of the coil, and a hard magnetization axis. The crosspiece is configured to form for each of the slots a slot wall which contains the material. The crosspiece includes a core which is made of an isotropic soft-magnetic material.

Electric machine with low magnetic slot leakage

An electrical axial flux machine including a rotor shaft is provided. The rotor shaft is rotatable about an axis of rotation. Two rotors are arranged on the rotor shaft. The two rotors are spaced apart when viewed in a direction of the axis of rotation. The axial flux machine further includes a stator arranged between the two rotors when viewed in the direction of the axis of rotation. The stator includes stator teeth. Each of the stator tooth extends in the direction of the axis of rotation between two end regions. The stator teeth are arranged and distributed uniformly around the axis of rotation at a radial spacing from the axis of rotation and include a stator winding system. At least one ring structure is provided connecting the two end regions of the stator teeth. A housing further surrounds the stator radially on the outside.

Axial flux machine having a lightweight design

A rotor for an electric machine is mounted for rotation about an axis and includes a plurality of permanent magnets placed on a radial outer surface of the rotor for forming at least one magnetic pole pair. An anisotropically-soft sintered magnetic material having an easy direction and a hard direction is located in at least one section of the rotor radially further inward than the plurality of permanent magnets.

Rotor for an electric machine

Growing community of inventors

Munich, Germany

Korbinian Petermaier