A rotor with embedded magnets for a permanent magnet motor

A motor rotor comprising

• a cylindrical rotor body defining a rotor axis, wherein the cylindrical rotor body has a diameter in the range from 60 to 80 mm, and wherein a length of the rotor body is in the range from 90 to 150 mm,
• a plurality of magnet slots extending axially through the rotor body, wherein
• a circumference of each of the magnet slots, in a plane perpendicular to the rotor axis, has a specific shape, wherein
• the specific shape extends from a first radial position proximal to an outer circumference of the rotor body to a second radial position distal to the outer circumference, and
• the specific shape comprises a first portion, a second portion, and a narrowing between the first and second portions,
• a plurality of magnets extending along the length of each of the magnet slots, where the magnets are positioned within the first portion and separated from the second portion by the narrowing, wherein
• a pair of adjacent magnet slots are oriented so that lines connecting the first and second radial positions of the respective magnet slots taper towards a radius of the rotor body, and
• the magnets in the pair of the magnet slots form a magnetic pole.