Dynamic Characteristics of a 3-D Superconducting Actuator with Arranged Permanent Magnets and Electromagnets

Seok Beom Kim, S. Ozasa, M. Sawae

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High-temperature superconductor (HTS) bulks can trap high magnetic fields due to strong flux pinning. We have been investigating 3-D superconducting actuators using HTS bulks for transportation applications. The actuator consists of an HTS bulk as a mover and 2-D arranged electromagnets (EMs) as a stator. However, many EMs and power supplies would be needed to produce a 3-D actuator with a large moving area; therefore, a new type of 3-D actuator based on a 2-D array of permanent magnets (PMs) in combination with a small number of EMs was designed and tested. In this new type of actuator, the speed control of the HTS bulk mover is very important to develop a reliable noncontact transportation device. In this paper, the dynamic movement characteristics of the HTS bulk mover in the new type of actuator were experimentally investigated as a function of the gap distance between PMs and the drive current patterns.

Original languageEnglish
Article number7422724
JournalIEEE Transactions on Applied Superconductivity
Issue number4
Publication statusPublished - Jun 1 2016



  • Actuators
  • dynamics
  • high-temperature superconductor
  • permanent magnets

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

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