Grainger CEME Seminars

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AC Loss in Fully Superconducting Machines

Event Type
Seminar/Symposium
Sponsor
Grainger CEME
Location
2017 ECEB
Date
Apr 3, 2017   4:00 - 5:00 pm  
Speaker
Matthew Feddersen
Views
38

Slides

Video

 

Abstract

Superconducting electric machines have shown potential for dramatic increases in power density for applications such as offshore wind generation, turbo-electric distributed propulsion in aircraft, and ship propulsion. Superconductors exhibit zero loss when in dc conditions, though ac current produces considerable loss due to hysteresis, eddy currents, and coupling. For this reason, many present designs for such machines are partially superconducting, meaning that the dc field components are superconducting while the ac armature coils are normal copper conductors. A fully superconducting machine would involve both superconducting field and armature components for a higher power density, though this would introduce the previously mentioned ac losses. This research aims to characterize the expected losses in the components of fully superconducting machines based on partially superconducting designs described in prior work. Various factors are examined, such as motor geometry, operating frequency, and operating temperature, and a low-loss design is proposed for wind generation based on the analysis.

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