EFFICIENT ELECTRIC MACHINE

摘要

An electric machine having a stator and a rotor which is mounted so as to be rotatable about a rotor axis and has a rotor body, in which at least two permanent magnets are arranged in receptacles, a first of which component magnets is associated with a first set of permanent magnets, and a second of which component magnets is associated with a second set of permanent magnets. The permanent magnets of the first set differ from the permanent magnets of the second set with respect to the material composition, In particular to the magnetic properties, and wherein at least one permanent magnet of the first or second set or at least one composite body has a contour, the cross-sectional face of which, being located perpendicularly with respect to the longitudinal axis, decreases within the respective receptacle towards that end thereof which is radially further to the outside.

主权项

1. An electrical machine comprising:
a stator; a rotor that is mounted rotatably around a rotor axis and has a rotor body; and at least two permanent magnets in the form of component magnets are arranged in receptacles of the rotor body, which extend from a radially inner end along their respective longitudinal axis to a radially more outward end, a first component magnet of which belongs to a first set of permanent magnets and a second belongs to a second set of permanent magnets, wherein the permanent magnets of the first set differ from the permanent magnets of the second set with respect to their material composition or magnetic properties, and wherein at least one permanent magnet of the first or second set or at least one composite body with two permanent magnets of the first set or the second set or a composite body with a permanent magnet of the first set and a permanent magnet of the second set has a contour whose cross-sectional area, perpendicular to the longitudinal axis, decreases within the respective receptacle toward a radially more outward end at least in sections.