A three dimensional analysis of magnetic fields around a thin magnetic conductive layer using vector potential

Igarashi, Hajime; Kost, A.; Honma, Tetsuo

doi:10.1109/20.717585

Cited by 24 publications

(14 citation statements)

References 5 publications

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“…The limit of validity has been shown: it runs perfectly only if the global skin effect is not prevailing inside the external sheets. Two ways could be then investigated to deal with this situation: either to solve directly the difference equations (9) and (16) in the direction perpendicular to the lamination, or to apply the surface impedance method to the external sheets [5], [6], in association with the homogenization technique for the other sheets.…”

Section: Discussionmentioning

confidence: 99%

“…Then we get and (5) for sheet (6) If is not continuous at the limit (the typical example for such a noncontinuous function is the tangential electric field), it remains possible to built a continuous function in respect to (5) and varying linearly between the centers of two consecutives sheets. The slope of depends on the four limit values of for 0018-9464/04$20.00 © 2004 IEEE these two sheets: (6) is no more valid [ Fig. 2…”

Section: B Homogenized Functions and Formentioning

confidence: 99%

See 1 more Smart Citation

Homogenization of Lamination Stacks in Linear Magnetodynamics

Krähenbühl¹,

Dular²,

Zeidan³

et al. 2004

IEEE Trans. Magn.

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An effective numerical modeling of devices with lamination stacks cannot be done without replacing the laminations by an equivalent solid region. So far, no convincing model has been proposed, even in the “simple” case of linear magnetodynamics—particularly if the resultant current in each sheet does not cancel. In this paper, we define the homogenized fields, and the related material properties. The noteworthy precision of the theoretic homogenized solution is shown and discussed by comparing it with the exact solution of the problem with laminations in the case of a simple “1.5-D” analytical test problem. The three-dimensional finite element solutions—real description of the sheets, refined mesh/homogenized region, coarser mesh—for the same test problem show also a perfect agreement

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Section: Discussionmentioning

confidence: 99%

Section: B Homogenized Functions and Formentioning

confidence: 99%

Homogenization of Lamination Stacks in Linear Magnetodynamics

Krähenbühl¹,

Dular²,

Zeidan³

et al. 2004

IEEE Trans. Magn.

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“…1, together with the frame of reference ( u , v, w } associated proposed for instance in [15], the analytical solution inside the sheet depth is provided by: (1) where C1 and C, are integration constants and . -with homogeneous Dirichlet boundary conditions.…”

Section: Numerical Modelmentioning

confidence: 99%

A numerical approach to the design of conducting shields for extremely low frequency magnetic field reduction

Bottauscio¹,

Chiarabaglio²,

Chiampi³

et al. 2002

Int Trans Elec Energy Syst

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“…On the other hand, integral methods appear to be well suited Manuscript for this problem since they require the discretization of the active parts of the system neglecting the air surrounding them. Among integral methods, method of moments (MoM) [6] and the boundary-element method (BEM) [7], [8] allow one to introduce correct far-field boundary conditions but often do not allow a proper modeling of the material. After this overview of analytical and numerical techniques, it is evident that shielding design represents a difficult task if one wants to take into account all the aspect of the problem (geometry, material properties, etc.).…”

Section: Introductionmentioning

confidence: 99%

Integral methods for analysis and design of low-frequency conductive shields

2003

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This paper presents and compares two different approaches to the analysis and design of nonferrous shields for extremely low-frequency magnetic fields. The first method is based on a circuital approach where the shield is modeled by a set of conductors coupled with each other by a matrix of self and mutual inductances. The second technique is based on an algebraic formulation of electromagnetic fields and adapted by means of integral equations to the analysis of thin conductive sheets. The paper shows the accuracy of the two methods for calculating induced current density inside the shield and for evaluating magnetic flux density in the shielded region.Index Terms-Conductive shielding, extremely low frequency, finite formulation of electromagnetic fields, thin conductor.

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A three dimensional analysis of magnetic fields around a thin magnetic conductive layer using vector potential

Cited by 24 publications

References 5 publications

Homogenization of Lamination Stacks in Linear Magnetodynamics

Homogenization of Lamination Stacks in Linear Magnetodynamics

A numerical approach to the design of conducting shields for extremely low frequency magnetic field reduction

Integral methods for analysis and design of low-frequency conductive shields

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