High stiffness fixation and thermal insulation in a superconducting planar motor

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Abstract

A superconducting planar motor is being investigated to provide higher acceleration potential compared to existing planar motors. Currently used permanent magnets are replaced by superconducting electromagnets, at a temperature below 20 K, providing a higher magnetic field density. Fixation of superconductors is a challenge due to the requirements on stiffness and thermal conductivity, which are conflicting in existing fixation designs. In contrast, an electromagnetic position actuator in closed loop control provides stiffness without a path for thermal conduction. The radiative heat flow through such an actuator is analyzed. Furthermore, a thin thermal insulation is required to achieve a high magnetic field density at the location of the warm motor coils. Two insulation concepts are analyzed and compared based on the remaining heat flow. First order heat transfer equations are solved and the results show the potential of the solutions proposed. Further work entails detailed design and experimental verification.

Original languageEnglish
Title of host publicationEuropean Society for Precision Engineering and Nanotechnology, Conference Proceedings - 18th International Conference and Exhibition, EUSPEN 2018
EditorsO. Riemer, Enrico Savio, D. Billington, R. K. Leach, D. Phillips
PublisherEuropean Society for Precision Engineering and Nanotechnology
Pages191-192
Number of pages2
ISBN (Print)9780995775121
Publication statusPublished - 1 Jan 2018
Event18th International Conference of the European Society for Precision Engineering and Nanotechnology, (EUSPEN 2018) - Venice, Italy
Duration: 4 Jun 20188 Jun 2018
https://www.euspen.eu/events/18th-international-conference-exhibition-4th-8th-june-2018-2-2-2/

Conference

Conference18th International Conference of the European Society for Precision Engineering and Nanotechnology, (EUSPEN 2018)
Abbreviated titleEUSPEN2018
CountryItaly
CityVenice
Period4/06/188/06/18
Internet address

Keywords

  • Cryogenic support
  • High stiffness
  • Low heat load
  • Thin thermal insulation
  • Vacuum insulation

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  • Cite this

    Koolmees, H. B., & Vermeulen, J. P. M. B. (2018). High stiffness fixation and thermal insulation in a superconducting planar motor. In O. Riemer, E. Savio, D. Billington, R. K. Leach, & D. Phillips (Eds.), European Society for Precision Engineering and Nanotechnology, Conference Proceedings - 18th International Conference and Exhibition, EUSPEN 2018 (pp. 191-192). European Society for Precision Engineering and Nanotechnology.