Squirrel cage rotor for a high-speed electrical machine with defined pressing surface disks
AssigneeABB Schweiz AG
InventorsMarkus Ahrens, Herbert Prenner
Life of this patent
Estimating the term…
Abstract
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.
Claims17
A rotor for a high-speed electrical machine, comprising:
- a stack of several thick solid disks axially lined up next to one another, short-circuiting bars passing through the stack in the axial direction and being connected to one another at their ends, the solid disks having a defined pressing surface at their end faces, the tie rods passing through the stack in the axial direction in the region of and/or close to the pressing surfaces, the tie rods pressing the solid disks against one another at the pressing surfaces, wherein the pressing surface is located essentially in the marginal region and/or close to the marginal region.
Dependencies are inferred from the claim text.