Magnetic band for reduction of cogging torque in rotary magnetic refrigeration system

Kang Hyouk Lee, Byung Su Park, Hwi Dae Kim, Jin Han Kim, Min Soo Kim, Keon Kuk, Hong Soon Choi, And Il Han Park

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper proposes a reduction method of the cogging torque of rotary magnetic refrigeration system by employing a magnetic band. The magnetic band is solidified mixture of iron particles and polymer micro-beads. This band is located between magnetocaloric materials to reduce variation of magnetic reluctance while rotor of the system rotates. Firstly, available magnetic permeabilities of the magnetic band material is experimentally examined by using a toroidal coil. Then, the system is numerically analyzed by changing permeabilities of the magnetocaloric material and the magnetic band to check the cogging torque. Using the results of numerical analysis, a target permeability of the magnetic band is determined to minimize cogging torque. The magnetic band with the target permeability is made and experiment is performed to reduce cogging torque of the system.

Original languageEnglish
Title of host publication6th IIR/IIF International Conference on Magnetic Refrigeration at Room Temperature, THERMAG 2014
EditorsAndrew Rowe
PublisherInternational Institute of Refrigeration
Pages117-118
Number of pages2
ISBN (Electronic)9782362150074
StatePublished - 2011
Event6th IIR/IIF International Conference on Magnetic Refrigeration at Room Temperature, THERMAG 2014 - Victoria, Canada
Duration: 7 Sep 201410 Sep 2014

Publication series

NameRefrigeration Science and Technology
Volume2011-January
ISSN (Print)0151-1637

Conference

Conference6th IIR/IIF International Conference on Magnetic Refrigeration at Room Temperature, THERMAG 2014
Country/TerritoryCanada
CityVictoria
Period7/09/1410/09/14

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