Robert Boschgmbh

Robert Bosch Gmbh

Marcus Alexander

Patrick Heuser

Mercedes Herranz Gracia

Miguel Ruiz De Larramendi

Arndt Kelleter

Kurt Reutlinger

Peter Theisinger

Sebastian Tabarelli

Adrian Heinrich Sichau

Mohammad Nassar Albunni

Daniel Klis

Juergen Fridrich

Nils Gebert

A rotor includes a rotor body. A plurality of the rotor poles have a two-layer magnet assembly. Each magnet assembly includes an inner layer of at least three magnets and an outer layer of two magnets. The inner layer forms a radially outwardly open arc. The magnets of the inner and outer layers each have an angle of inclination with respect to a pole center axis. The angle of inclination is formed between the pole central axis and an inclination axis of the respective magnet. The magnets of the radially outer layer are arranged such that a point of intersection of the axis of inclination of the radially outer layer with the pole center axis lies radially inside the radially inner layer, and the angle of inclination of the magnets of the outer layer is smaller than the angle of inclination of the outer magnets of the inner layer.

Rotor of an electric machine

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 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

Ludwigsburg, Germany

Marcus Alexander