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Design, Fabrication, and Critical Current Testing of No-Insulation Superconducting Rotor Coils for NASA's High-Efficiency Megawatt MotorNASA 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.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Scheidler, Justin J.
(NASA Glenn Research Center Cleveland, OH, United States)
Tallerico, Thomas F.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
February 9, 2019
Publication Date
July 12, 2018
Subject Category
Mechanical Engineering
Report/Patent Number
Meeting Information
Meeting: AIAA/IEEE Electric Aircraft Technologies Symposium
Location: Cincinnati, OH
Country: United States
Start Date: July 9, 2018
End Date: July 11, 2018
Sponsors: American Inst. of Aeronautics and Astronautics
Funding Number(s)
WBS: WBS 081876.
Distribution Limits
Work of the US Gov. Public Use Permitted.
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