Robert Boschgmbh

Arndt Kelleter

Kurt Reutlinger

Patrick Heuser

Mercedes Herranz Gracia

Marcus Alexander

Thomas Berger

Stefan Schuerg

Miguel Ruiz De Larramendi

Dimitrios Stavrianos

Harald Laue

Sebastian Tabarelli

Karsten Voelz

Nils Gebert

Murat Kol

Artem Babajanyan

Alexandra Wilde

Jochen Schechterle

The invention relates to an electric asynchronous machine (), in particular an induction machine, comprising: &#x2014;a cylindrical stator () with stator teeth () on a stator yoke (), wherein a ratio between a yoke height (hy) of the stator yoke () in the radial direction and a groove height (hn) of the stator grooves () in the radial direction ranges from 1.75 to 2.5; &#x2014;a cylindrical rotor () with poles () on a rotor yoke which are defined by short-circuit windings in a rotor body (), wherein a ratio between the yoke height of the rotor body () in the radial direction and the groove height of the rotor grooves in the radial direction ranges from 2 to 2.75.

Electric machine

A short-circuit ring for a rotor of an electrical asynchronous machine is circular and has along its circumference a multiplicity of recesses extending in the axial direction, into which rods of a rotor cage of the asynchronous machine can be placed. The short-circuit ring is assembled from a plurality of partial ring segments.

Short-circuit ring for an electrical asynchronous machine, composed of partial ring segments

The invention relates to a drive device () for a motor vehicle () having two drivable wheels () on a wheel axle (), said drive device comprising an electric machine (), which is designed as an asynchronous machine and which has at least one stator () and at least one rotor (), wherein the rotor () is or can be operatively connected to at least one of the wheels () in order to drive said wheel. According to the invention, the electric machine () has two rotors (), which can rotate independently of one another, each of which is or can be operatively connected to one wheel () of the wheel axle (), and a device for varying the electric rotor resistance of at least one of the rotors ().

Drive device for a motor vehicle, motor vehicle

A rotor () for an electric machine, in particular a permanently excited synchronous machine. At least one recess () is formed on the outer wall () of the receiving space () and forms a non-magnetizable space () adjacent to the lengthwise surface () of the permanent magnet (). Due to this non-magnetizable space (), iron losses in the stator teeth can be reduced in particular during operation of the electric machine in the field weakening range, which may result in a rise in efficacy of up to 3% for the electric machine.

Rotor for an electric machine comprising recesses in magnet pockets

Growing community of inventors

Erdmannhausen, Germany

Arndt Kelleter