Rotating electric machines have a long history in power engineering and conventional motors and generators have reached an extremely high maturity. The e-machines have penetrated our everyday life to a steadily increasing level. The general trend to electrification has promoted motors for vehicles a lot. The requirements to create a increasingly green society have stimulated research in wind power generators, e-aircrafts a lot.
The intensified efforts in (liquid) Hydrogen as an energy vector have led to research in how to integrate that in electric systems and powertrains.
These trends together with improved HTS materials and new approaches in electric machinery allow to design even more compact and efficient electric machines, powertrains and energy chains.
We will show these trends and sketch the impacts and pick up selected examples of recent HTS developments (e.g. [1]) to show potential implications on electric machines.
However, these aspects can only serve as a seed for further research and development.
We will report on activities in Germany's National Hydrogen Strategy Projects and HTS in power engineering.

[1] Tabea Arndt et al 2021 Supercond. Sci. Technol. 34 095006 - https://doi.org/10.1088/1361-6668/ac19f4