Optimal design method for magnetization directions of a permanent magnet array

Jae Seok Choi, Jeonghoon Yoo

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


In many magnetic systems, the permanent magnet (PM) pattern has a great influence on their performance. This study proposes a systematic optimization method for designing discrete magnetization directions. While previous works have been mostly dependent on researchers' intuition, the developed method is systematic and can be applied to a two-dimensional PM-type eddy current brake model. The effectiveness of the method is confirmed, where the design's aim is to maximize the braking force on a moving conductor. The sensitivity analysis is accomplished by the adjoint variable method and the sequential linear programming is used as an optimizer. Several optimization results for various conditions through the proposed design method are compared to each other and the optimal magnet configuration for an eddy current brake is suggested.

Original languageEnglish
Pages (from-to)2145-2151
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Issue number15
Publication statusPublished - 2010 Aug

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) grant funded by the Korea government (MEST) ( No. 2009-0079338 ).

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Optimal design method for magnetization directions of a permanent magnet array'. Together they form a unique fingerprint.

Cite this