Rotor for permanent magnet-excited, high-speed electric machines and electric machine equipped with this rotor

DETAILED DESCRIPTION We claim: 1.
Rotor for high-speed magnet excited electric machines comprising a rotor shaft; permanent magnets and fillers arranged between them, said fillers being made of non-magnetic material, said permanent magnets and said fillers being arranged circumferentially on a partial section of said rotor shaft; said permanent magnets and said fillers extending in axial direction of said rotor shaft; said permanent magnets and said fillers forming together a common circumferential surface, said circumferential surface being slightly conic when viewed in said axial direction of said rotor shaft; a prestressed binding made of a high-strength material and surrounding said permanent magnets and said fillers on said circumferential surface, said binding being a prefabricated component made of fiber-reinforced plastic, said fiber-reinforced plastic having fibers being wound to form a sightly conical inner surface of said prefabricated component; said binding being prestressed relative to said rotor shaft for forcing said permanent magnets and said fillers against said rotor shaft.
2.
Rotor in accordance with claim 1, in which said rotor shaft in an area of the permanent magnets and fillers is designed with a polygonal cross-sectional area and said permanent magnets as well as said fillers are attached on surfaces of the shaft corresponding to said cross-sectional area.
3.
Rotor in accordance with claim 2, in which the permanent magnets and fillers are bonded onto surfaces of the shaft corresponding to said cross-sectional area.
4.
Rotor in accordance with claim 1, in which a plurality of permanent magnets is arranged next to one another on two opposite sections of said rotor shaft forming a group on each section, said fillers being arranged between them, and said groups of permanent magnets have different polarity.
5.
Rotor in accordance with claim 2, in which said rotor shaft has a dodecagonal cross section, and the permanent magnets are arranged in groups of four next to one-another, and the fillers are arranged between them