Rotor or stator of an electrical machine having permanent magnets mounted on the yoke

摘要

The invention relates to the rotor or stator of an electrical machine having permanent magnets which are mounted on the yoke and consist of barium ferride, strontium ferride or similar substances having a high level of hardness and low ductility. The oxide magnet segment (3) is mounted directly on the inner edge (6) of the yoke (1) or on the outer edge (7) of the yoke (2) with the aid of a centrally arranged screw (5), the radius of curvature of the bearing surface of the segment (3) being less than the internal radius (R3) of the yoke (1), and the radius of curvature of the bearing surface of the segment (3) being greater than the external radius (R4) of the yoke (2). The radii of curvature are selected in the same ratios in the case when the segments (3) are mounted with the aid of pole shoes. <IMAGE>