Optimal array design of the permanent magnet in an eddy current brake

Jae Seok Choi, Jeonghoon Yoo

Research output: Contribution to journalArticle

Abstract

Eddy current is usually generated in the material with high conductivity by time-varying source such as AC current and also is induced by the moving source with relative velocity. The contactless magnetic brake makes use of the braking force from the eddy current generated by the moving source and currently used for the secondary brakes of heavy trucks, buses and rail vehicles. This study aims to design the magnetization pattern of the eddy current brake system of a permanent magnet type where the design aim is to maximize the braking force. The analysis of brake systems is based on the two-dimensional finite element analysis. We use the sequential linear programming as the optimizer and the adjoint variable method is applied for the sensitivity analysis.

Original languageEnglish
Pages (from-to)658-663
Number of pages6
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume33
Issue number7
DOIs
Publication statusPublished - 2009 Aug 7

Fingerprint

Eddy currents
Brakes
Permanent magnets
Braking
Linear programming
Trucks
Sensitivity analysis
Rails
Magnetization
Finite element method

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

Cite this

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abstract = "Eddy current is usually generated in the material with high conductivity by time-varying source such as AC current and also is induced by the moving source with relative velocity. The contactless magnetic brake makes use of the braking force from the eddy current generated by the moving source and currently used for the secondary brakes of heavy trucks, buses and rail vehicles. This study aims to design the magnetization pattern of the eddy current brake system of a permanent magnet type where the design aim is to maximize the braking force. The analysis of brake systems is based on the two-dimensional finite element analysis. We use the sequential linear programming as the optimizer and the adjoint variable method is applied for the sensitivity analysis.",
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Optimal array design of the permanent magnet in an eddy current brake. / Choi, Jae Seok; Yoo, Jeonghoon.

In: Transactions of the Korean Society of Mechanical Engineers, A, Vol. 33, No. 7, 07.08.2009, p. 658-663.

Research output: Contribution to journalArticle

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