Trial production and experiment of linear synchronous actuator with field-cooled HTS bulk secondary

Atsushi Takahashi, Hiroshi Ueda, Atsushi Ishiyama

Research output: Contribution to journalConference articlepeer-review

13 Citations (Scopus)


It is expected that HTS bulk materials can be applied to various electric devices. We have fabricated and tested a linear actuator with a single-sided primary and an HTS bulk secondary. The linear actuator was comprised of a zero-field-cooled YBCO bulk plate for the secondary (mover) and copper windings with iron core for the primary. In this study, to improve the characteristics of the linear actuator, we designed and fabricated a double-sided and short-secondary type of linear synchronous actuator which has a field-cooled YBCO bulk plate as a secondary (mover). The static synchronous thrust forces were measured. To evaluate the static characteristics of the linear actuator, we also numerically investigated the electromagnetic behavior within the bulk in an operational environment of the linear actuator by using a computer program based on the finite element method (FEM). The influence of the supercurrent distribution in the bulk on the thrust-angle characteristics of the model linear actuator are discussed.

Original languageEnglish
Pages (from-to)2251-2254
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 II
Publication statusPublished - Jun 2003
Externally publishedYes
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002


  • Finite element method
  • High-temperature superconducting bulk
  • Linear actuator
  • Synchronous thrust force
  • Trapped field

ASJC Scopus subject areas

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


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