A ROTOR FOR AN ELECTRICAL MACHIN

摘要

A rotor (300) for an axial-flux electrical machine is disclosed. The rotor has a plurality of permanent magnets (350) fixed thereto, with each of the plurality of magnets extending at least partly through an aperture in the rotor. The arrangement is such that material of the rotor (200) abuts each magnet (350) so as to locate the magnet substantially circumferentially with respect to the axis of rotation of the rotor and substantially axially in at least one axial direction. The magnets (350) may slide radially onto the rotor (300) and be constrained axially and circumferentially by a tongue-and-groove arrangement (325, 355), with reinforced tape (340) being wound around the radially outer edge thereof to provide radial constraint.