Design, Fabrication, and Critical Current Testing of No-Insulation Superconducting Rotor Coils 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. This paper discusses the fabrication of the no-insulation high temperature superconducting (HTS) coils and presents the lessons learned. The process is compared to the fabrication of conventionally insulated HTS coils. Testing of the coils' critical current at liquid nitrogen temperature is also presented. The influence of thermal cycling on the critical current and n-value is studied.

[发布日期] 2018-07-12

[学科分类] 机械工程学

[关键词] CRITICAL CURRENT;DESIGN OPTIMIZATION;ELECTRIC COILS;ELECTRIFIED AIRCRAFT PROPULSION;POWER EFFICIENCY;RELIABILITY ANALYSIS;ROTORS;SUPERCONDUCTORS (MATERIALS);COMMERCIAL AIRCRAFT;DESIGN ANALYSIS;LESSONS LEARNED;INSULATION;SUPERCONDUCTIVITY;THERMAL CYCLING TESTS;TRANSPORT AIRCRAFT