Electromagnetic analysis of fully superconducting motors employing dilute gas rotor and liquid hydrogen stator cooling structure

Abstract This paper deals with fully superconducting motors (FSCMs) applied in the electric aircraft propulsion systems; stator employs MgB 2- superconductor (SC) armature windings cooled at 20 K by using liquid hydrogen, while rotor has field made of REBCO SC wires below 50 via heat conduction and convective transfer dilute gas. The cooling structure can be simplified adopting this type design. authors evaluated optimal design for FSCM analytical equations loss analysis FEM. characteristics were compared between ones electromagnetic shield stainless steel (SUS) copper (Cu); results show that output density SUS achieved 18.3 kW/kg, terms estimation FEM, both had efficiency over 98.5%.