The low core losses and high yield strength of amorphous materials are attractive properties
for ultra-high-speed rotor applications. This paper proposes an innovative interior …

Sleeves are frequently used for protecting high-speed rotors from high centrifugal forces at
high speeds. Currently, metal sleeves such as titanium and inconel alloys and fiber sleeves …

The trend to reduce the cost of offshore wind energy is to develop large wind turbines.
Turbine sizes of 6-8 MW have already been seen in the wind market. Even larger turbine …

Amorphous magnetic materials (AMMs) have been commercially available for decades.
However, their application to electrical machines still lacks of breakthrough progress. This …

To further improve the power density of modern electric drive technologies many motor
designers decide to increase the rotational speed of the motor up to several tens of …

High-speed operation is one of an important developments of the electric machines.
Currently, surface-mounted PM rotor is more commonly employed than interior PM rotor in …

Compact, lightweight, and large-scale generators are desired for offshore wind energy
application due to transportation and installation requirements. In order to reduce the …

Rotor and stator stacks consist of laminated electrical steel sheets and represent the
essential components of an electric drive. The process chain for the production of laminated …

Mit der vorliegenden Arbeit nähert sich meine Expedition in die Welt der Eisenverluste
vorübergehend ihrem Ende. Diese achtjährige Reise hat 2010 begonnen, als ich während …

Steel laminations for electric machines are commonly manufactured using punching or laser
cutting. The cutting process leads to degraded magnetic properties and therefore reduces …