Study on the Dynamic Stability of 3-D Superconducting Actuator by Various Typed HTS Bulk Movers

S. B. Kim, H. Nakano, S. Ozasa, M. Sawae

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


High-temperature superconductor (HTS) material can trap high magnetic fields due to its strong flux pinning force. Herein, based on our belief that such a device would be useful as a transporter in clean rooms where silicon wafers are manufactured, we report on the development of a three-dimensional (3-D) superconducting actuator using HTS bulk material in a noncontact transportation device that will move freely in 3-D space. The proposed actuator consists of a trapped HTS, which provides the mover, along with two-dimensionally arranged copper-wound iron-core electromagnets that form the stator. The current and the polarity of each electromagnet can be individually controlled via the power supply. In our previous experiments, a single-component mover was observed to overshoot during operation, which led us to conclude that a more powerful levitation force was needed. In this study, single-component HTS movers (inner diameters of 46 and 60 mm) and multicomponent HTS movers were used to increase the levitation force and dynamic stability.

Original languageEnglish
Article number7010896
JournalIEEE Transactions on Applied Superconductivity
Issue number3
Publication statusPublished - Jun 1 2015


  • 3-D superconducting actuator
  • HTS bulk mover
  • dynamic stability
  • levitation force

ASJC Scopus subject areas

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


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