Abstract: A radial portion of a rotor is rotatably mounted to a stator and a cylindrical portion axially extends over radial teeth formed on the stator. A first surface of the first soft ferromagnetic material element is mounted to an inner surface of the cylindrical portion and a second surface of the first soft ferromagnetic material element has mounted on it a first magnet such that a surface of a pole of the first magnet is oriented substantially non perpendicular to a line from the centre of the rotor to the first magnet. A first surface of a second soft ferromagnetic material element is mounted to the first magnet such that the first magnet is sandwiched between the first and second soft ferromagnetic material elements. A second surface of the second soft ferromagnetic material element is substantially perpendicular to the line from the centre of the rotor to the first magnet.

Abstract: A rotor for an electric motor or generator, the rotor comprising a radial portion, a cylindrical portion, a first soft ferromagnetic material element, and a second soft ferromagnetic material element, wherein the radial portion is arranged to be rotatably mounted to a stator and the cylindrical portion is arranged to axially extend over radial teeth formed on the stator when the rotor is rotatably mounted to the stator, wherein a first surface of the first soft ferromagnetic material element is mounted to an inner surface of the cylindrical portion and a second surface of the first soft ferromagnetic material element is arranged to have mounted on it a first magnet such that a surface of a pole of the first magnet is oriented substantially non perpendicular to a line from the centre of the rotor to the first magnet, wherein a first surface of the second soft ferromagnetic material element is arranged to be mounted to the first magnet such that the first magnet is sandwiched between the first soft ferromagneti

Abstract: A rotor (100) having a first plurality of laminates (110), comprising a first plurality of protrusions (120) located at a periphery of each of the first plurality of laminates, and a second plurality of laminates (1101), arranged differently from the first plurality of laminates (110) around a shaft hole (132), comprising a second plurality of protrusions (120?) located at a periphery of each of the second plurality of laminates, wherein the first plurality of protrusions are asymmetric and/or angularly offset from the second plurality of protrusions, and wherein the second plurality of protrusions are asymmetric and/or angularly offset from the first plurality of protrusions. The rotor further having a plurality of magnets (115), each inserted between the first plurality of protrusions and/or the second plurality of protrusions, wherein reactive forces operate to hold the plurality of magnets.

Abstract: A rotor (100) having a first plurality of laminates (110), comprising a first plurality of protrusions (120) located at a periphery of each of the first plurality of laminates, and a second plurality of laminates (1101), arranged differently from the first plurality of laminates (110) around a shaft hole (132), comprising a second plurality of protrusions (120?) located at a periphery of each of the second plurality of laminates, wherein the first plurality of protrusions are asymmetric and/or angularly offset from the second plurality of protrusions, and wherein the second plurality of protrusions are asymmetric and/or angularly offset from the first plurality of protrusions. The rotor further having a plurality of magnets (115), each inserted between the first plurality of protrusions and/or the second plurality of protrusions, wherein reactive forces operate to hold the plurality of magnets.