Magnetic pole-piece structure

摘要

In order to provide a magnetic pole-piece having good immunity to eddy currents while providing a high torque rating there is provided a magnetic pole-piece (60) comprising a magnetic part (64) and a retaining part (62), wherein the retaining part (62) supports the magnetic part (64).

主权项

1. A magnetic pole-piece configured for use in a magnetic gear or machine, the magnetic pole-piece comprising a magnetic part and a retaining part, wherein the retaining part supports the magnetic part, wherein the retaining part is a framework to which the magnetic part is secured, the magnetic pole-piece further configured to rotate about a center axis of the magnetic gear or machine, wherein the framework has a “U” shape, a cruciform shape, or an “H” shape in cross-section, the cross-section being perpendicular to a radius extending from the center axis, and wherein the retaining part is a carbon-fiber composite or a metallic structure.