Abstract: A winding for multi-pole electrical machines. The device can be a synchronous machine with permanent magnet excitation. The invention is based on solving the problem for providing a winding for heavy duty electrical machines that permits a compact design such as in the overhang of a set of coils. The winding losses including the additional losses in the windings are minimized and the winding is capable of being highly stressed, mechanically, electrically and thermally. Therefore the multi-phase winding of the invention is inserted into the slots of a stator of an electrical machine to be provided with wound coils. This winding within a slot is looped continuously per group of coils to the greatest possible extent, using square or rectangularly shaped litzendraht wire connectors.

Abstract: The invention relates to a permanent magnet-excited assembly of an electrical machine, as well as to a process for producing in particular a synchronous machine with a ferromagnetic body and permanent magnets arranged therein, for application as compact solutions for drives. According to the invention, punched single-component metal sheet disks or metal sheet strips (2) of the type known per se, with slots (3) and teeth (4) toward the back accommodate a arrangement of internal slots (5). The number and position of the internal slots (5) are adapted to the slots (3) for receiving the permanent magnets (7). A narrow removable bridge (9) is first arranged between the inner slots (5) and the slots (3). The pack of sheet metal elements is subsequently laminated and then solidified with non-ferromagnetic material (6). Following curing of the solidification, the slots (3) are milled down to the non-ferromagnetic material (6). Permanent magnets (7) are inserted in preferably semi-open slots (3) and solidified.