Preliminary Design of the Superconducting Rotor for NASA's High-Efficiency Megawatt Motor

[摘要] NASA Glenn Research Center is developing a 1.4 MW high-efficiency electric machine for future electrified aircraft to reduce energy consumption, emissions, and noise. This wound-field, synchronous machine employs a self-cooled, superconducting rotor to achieve excellent specific power and efficiency. The design of the superconducting rotor and the optimization of its electromagnetic and structural responses are analyzed in this paper. Candidate designs are evaluated in terms of absolute performance, specific performance, and performance per cost. It is found that optimizing the electromagnetic response for absolute or specific performance yields designs that are similar to each other, but opposite of the cost-optimized design. A method to define the thermal requirements of the superconducting coils and integrated cryocooler is also presented.

[发布日期] 2018-07-10

[学科分类] 机械工程学

[关键词] DESIGN ANALYSIS;ELECTRIC PROPULSION;ENERGY CONSUMPTION;FAULT TOLERANCE;POWER EFFICIENCY;SUPERCONDUCTIVITY;THERMAL CONDUCTIVITY;COMMERCIAL AIRCRAFT;CRYOGENIC COOLING;DESIGN OPTIMIZATION;FLUX DENSITY;HIGH TEMPERATURE SUPERCONDUCTORS;MIRRORS