System Approach of Usability of HTS Electrical Machines in Future Electric Aircraft

The concept of the more electric aircraft and fully electric aircraft implies the development of a fully new energy system. An ironless fully superconducting machine with outer ferromagnetic shield looks very promising due to high critical currents and low losses. This paper presents the results of the analytical calculation of the specific power for different power ranges and rotation speeds. Finite element modeling was used for verifying and clarifying the results of the analytical solution. The developed method of combining analytical solutions and numerical simulations allows us to determine the highest power density of the machine. It can be extremely useful at the first stage of the design research of the new type of machines without iron cores as well as for the design and optimization of the machines' magnetic circuit for different numbers of pole pairs, stator, and rotor dimensions, HTS critical currents, and operation times.