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A reciprocating type active magnetic regenerative refrigeration (AMR) utilizes the magnetocaloric effect of magnetic materialswhich occurs duringmagnetization and demagnetization processes by moving magnetic materials in and out of a magnet. Estimating the induced voltage and electromagnetic force in the superconducting magnet during the reciprocation is crucial to optimize the design of theAMRsystem. This paper represents the behavior of the superconducting magnet during the AMR operation that the magnetic material HoAl2 weighing 250 g enters and exits the 120 mm bore NbTi superconducting coil. The calculation and measurement results of the induced voltage and electromagnetic force in the magnetic field of 0–5 T at 25 K were reported.

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  © 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Keyword: Active magnetic regenerative refrigeration, magnetic refrigeration, superconducting magnet

Date published: 2024-04-02

Publisher: Institute of Electrical and Electronics Engineers (IEEE)

Journal:

• IEEE Transactions on Applied Superconductivity (ISSN: 10518223) vol. 34 issue. 5 p. 1-5 3801005

Funding:

• JST-Mirai Program JPMJMI18A3

Manuscript type: Author's version (Accepted manuscript)

MDR DOI: https://doi.org/10.48505/nims.5150

First published URL: https://doi.org/10.1109/tasc.2024.3384342

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Updated at: 2024-12-16 10:22:32 +0900

Published on MDR: 2026-04-02 08:25:55 +0900