Improvement of Open Boundary Magnetic Field Analysis of Air-Core Magnet Using High Order Boundary Sensitivity

Kwak, In-Gu; Lee, Se-Hee; Lee, Dong-Ik; Park, Il-Han

doi:10.1109/tasc.2004.830886

Cited by 1 publication

(1 citation statement)

References 6 publications

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“…Also, it is not easy and uncertain to determine the outer boundary of field region for accurate solution. To solve this problem, several methods have been proposed such as boundary element method, infinite element method, hybrid harmonic FEM, ballooning, and others [1][2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Symmetric and Periodic Open Boundary Problem by Coupling of FEM and Fourier Series

Kim¹

2013

Journal of Magnetics

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Most electrical machines like motor, generator and transformer are symmetric in terms of magnetic field distribution and mechanical structure. In order to analyze these problems effectively, many coupling techniques have been introduced. This paper deals with a coupling scheme for open boundary problem of symmetric and periodic structure. It couples an analytical solution of Fourier series expansion with the standard finite element method. The analytical solution is derived for the magnetic field in the outside of the boundary, and the finite element method is for the magnetic field in the inside with source current and magnetic materials. The main advantage of the proposed method is that it retains sparsity and symmetry of system matrix like the standard FEM and it can also be easily applied to symmetric and periodic problems. Also, unknowns of finite elements at the boundary are coupled with Fourier series coefficients. The boundary conditions are used to derive a coupled system equation expressed in matrix form. The proposed algorithm is validated using a test model of a bush bar for the power supply. And the each result is compared with analytical solution respectively.

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Section: Introductionmentioning

confidence: 99%

Analysis of Symmetric and Periodic Open Boundary Problem by Coupling of FEM and Fourier Series

Kim¹

2013

Journal of Magnetics

View full text Add to dashboard Cite

show abstract

Improvement of Open Boundary Magnetic Field Analysis of Air-Core Magnet Using High Order Boundary Sensitivity

Cited by 1 publication

References 6 publications

Analysis of Symmetric and Periodic Open Boundary Problem by Coupling of FEM and Fourier Series

Analysis of Symmetric and Periodic Open Boundary Problem by Coupling of FEM and Fourier Series

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