Patent ID: 11955843
Assignee: ABB SCHWEIZ AG
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A motor, comprising:
a stator defining an interior space;
a rotor disposed in the interior space of the stator, wherein the rotor includes:
a body defining a structure, wherein the structure defines a plurality of cavities in the body of the rotor,
wherein the plurality of cavities comprises:
a first cavity,
a second cavity, and
a third cavity,
wherein the first cavity is spaced radially outward from the second cavity and the third cavity, and the second cavity is spaced radially outward from the third cavity, and
wherein a thickness of the first cavity is larger than a thickness of the second cavity and a thickness of the third cavity,
wherein the thickness of the second cavity is larger than the thickness of the third cavity;
wherein the thickness of the second cavity is larger than a thickness for a cavity spaced radially inward from the second cavity and the third cavity; and
a plurality of magnets disposed in the plurality of cavities,
wherein at least some of the cavities of the plurality of cavities have a magnet from the plurality of magnets disposed therein.