Optimal design of an electromagnetic coupler to maximize force to a specific direction

Jeonghoon Yoo, Seunjin Yang, Jae Seok Choi

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


This study suggests a concept design for an electromagnetic (EM) coupler, using the topology optimization method. To maximize the force generated by magnetic flux, the magnetic energy generated must be differentiable, at the location where the force is acting, in a prescribed force direction. This study proposes a topology optimization scheme for maximizing the force in a specific direction, using a commercial analysis program, ANSYS, to provide the force value. We use ANSYS for obtaining the resultant force as well as analyzing the magnetic field. We adopt a density calculation method called SIMP (solid isotropic material with penalization), and compute the sensitivity of the objective function according to the density change of each finite element in the design domain. As a result, optimal shapes of the core and the armature of the coupler are obtained and the performance is verified.

Original languageEnglish
Article number4544937
Pages (from-to)1737-1742
Number of pages6
JournalIEEE Transactions on Magnetics
Issue number7
Publication statusPublished - 2008 Jul

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by Korea Science and Engineering Foundation (KOSEF) under Grant R01-2006-000-10074-0.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


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