Abstract: A rotor for an electric machine of a motor vehicle is provided, which can be used as a rotor of the electric machine, which is rotatably mounted with respect to a stator of the electric machine, wherein the rotor has a plurality of recesses distributed along a circumferential direction and extending along a longitudinal direction, wherein the geometric shapes of the cross sections of the recesses differ from one another along the circumferential direction, wherein, with respect to the assembled state of the electric machine, the recesses are each closed with respect to a radial direction towards a side of the rotor which faces the stator.

Abstract: A rotor of an electrical asynchronous machine is provided, the rotor comprising a rotor shaft which extends along an axis of rotation, a rotor laminated core which is directly or indirectly connected to the rotor shaft, a plurality of rotor bars which extend in the direction of the axis of rotation and are distributed in the circumferential direction about the axis of rotation, and at least one short-circuit ring which connects all rotor bars to one another in an electrically conductive manner. The plurality of rotor bars comprises at least three different rotor bars, which differ from one another in terms of their width in each case. An electrical asynchronous machine having a rotor, and a method for determining the rotational position of the rotor are also provided.