Permanent magnet module for a permanent magnet machine

A method of manufacturing a permanent magnet module for a permanent magnet machine, the method comprising:

• providing at least a permanent magnet;
• manufacturing a cover for covering the permanent magnet, the cover comprising a stainless steel, wherein the cover includes at least a top side and two lateral sides, a magnetic permeability of the top side being higher than a magnetic permeability of the two lateral sides, the two lateral sides being respectively attached to a first edge and a second edge of the top side, the two lateral sides being angled with respect to the top side;
• and
• attaching the cover to the permanent magnet;
• wherein the top side includes at least a first stainless-steel phase and the two lateral sides include at least a second stainless-steel phase.