Multi-objective optimization of an actively shielded superconducting field winding

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

An important challenge in the design of air-core superconducting machines is the containment of the magnetic fields within the electric machine. Current solutions result in large reductions of the high power density achievable through the use of superconducting windings. To address this challenge, an actively shielded electromagnet design, an approach commonly used in MRI magnet designs, is considered. This topology utilizes a set of main coils to produce armature MMF, while including another set of oppositely excited compensating coils to mitigate the fields radiating outside the machine. This approach eliminates or reduces the use of steel in a passive magnetic shield, allowing for very high power density machines. Furthermore, a multi-objective optimization scheme is introduced to minimize two competing objectives, superconducting coil usage and machine radius. Results show a 32% decrease in machine radius with a 33% increase in coil size.

Original languageEnglish (US)
Title of host publication2015 IEEE Power and Energy Conference at Illinois, PECI 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479979493
DOIs
StatePublished - Mar 20 2015
Event2015 IEEE Power and Energy Conference at Illinois, PECI 2015 - Champaign, United States
Duration: Feb 20 2015Feb 21 2015

Publication series

Name2015 IEEE Power and Energy Conference at Illinois, PECI 2015

Other

Other2015 IEEE Power and Energy Conference at Illinois, PECI 2015
CountryUnited States
CityChampaign
Period2/20/152/21/15

Keywords

  • AC machines
  • critical current density
  • generators
  • magnetic shielding
  • rotating machines
  • superconducting coils
  • superconducting magnets
  • wind power generation

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

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