CPC H02K 5/1677 (2013.01) [F16C 17/04 (2013.01); H02K 5/24 (2013.01); F16C 2380/26 (2013.01); H02K 2205/03 (2013.01); H02K 2205/09 (2013.01)] | 20 Claims |
1. A rotor for a high-speed electrical machine comprising a rotor shaft, the shaft comprising a rotor core and a rotor sleeve, a compensation element being arranged between the rotor core and the rotor sleeve to absorb differences in thermal expansion of the rotor core and the rotor sleeve,
wherein hollow spaces are arranged between the compensation element and the rotor core, and/or between the compensation element and the rotor sleeve;
wherein the compensation element is a different material than the rotor sleeve, and
wherein when the rotor is viewed at a cross-section whose plane extends parallel to an axial direction of the rotor shaft and intersects a center of the rotor shaft, the compensation element extends along the axial direction between the rotor sleeve and the rotor core.
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