Abb Research Ltd.

Abb Schweiz Ag

Herbert Prenner

Vishal Mallick

Francedillaois Meynard

Werner Heil

Karl Parfrey

Markus Ahrens

A rotor for a high-speed electrical machine is specified, which rotor is composed of a stack of several thick solid disks axially lined up next to one another, the solid disks having a defined pressing surface at their end faces, and tie rods passing through the stack in the axial direction in the region of the pressing surfaces. In this case, the tie rods press the solid disks against one another at the pressing surfaces. Furthermore, in order to save weight and material, a central, rotationally symmetrical recess adjoining the marginal region of each solid disk is provided on at least one end face of the solid disk.

Squirrel cage rotor for a high-speed electrical machine with defined pressing surface disks

In a binding (19) for winding overhangs (20) of rotors (1) of electric machines, essentially comprising a plastic matrix with fibrous material embedded therein, the binding (19) is formed by winding a fiber tape (15) onto the winding overhang (20). The plastic matrix is composed of a thermoplastic. Furthermore, a method is described for applying the fiber tape to the winding overhang of an electric machine.

Binding for winding overhangs of rotors of electric machines, and method

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Birmenstorf, Switzerland

Herbert Prenner