A Partially Superconducting Flux Reversal Machine with High Power Density

Due to the rise of electric mobility, there is an increasing need for novel and efficient electric motor designs. In particular, high power density is needed for all-electric aircraft applications. This paper introduces a new double-rotor flux reversal motor topology with an air-core stator, high-temperature superconducting field coils, and superconducting magnetics shields. Yttrium barium copper oxide is utilized for the field coils at T=65 K, and aluminum Litz is used for the armature windings at T=95 K. With the proposed design, a power density of 41 kW/kg is achieved, and efficiency at nominal power is greater than 98.87%.