Rotor for an electric machine

A rotor for an electric machine, the rotor comprising:

• a rotor main body that is substantially cylindrical, with a shell surface that is partially imaginary, substantially hollow-cylindrical, the shell surface delimiting the rotor main body in a first radial direction;
• and
• a plurality of primary permanent magnets,
• wherein the plurality of primary permanent magnets is distributed among k groups of primary permanent magnets with k≥1,
• wherein the plurality of primary permanent magnets, when viewed in a tangential direction, are disposed and configured successively on the shell surface such that the plurality of primary permanent magnets extend away from the shell surface in the first radial direction,
• wherein the rotor main body has a group comprising at least one shoulder of n shoulders with n≥1,
• wherein each of the n shoulders extends away from the substantially hollow-cylindrical shell surface in the first radial direction,
• wherein the plurality of primary permanent magnets and each of the shoulders, when viewed in the tangential direction, are disposed without leaving any voids therebetween,
• wherein a group of secondary permanent magnets that comprises at least one secondary permanent magnet is in each case provided for each of the shoulders and assigned to the respective shoulder, and
• wherein the at least one secondary permanent magnet of a respective group is disposed in such a manner on the shoulder to which the group is assigned that each of the secondary permanent magnets of a respective group extends away from the respective shoulder in the first radial direction.