An Efficient Modeling Method for 3-D Magnetic Plates in Magnetic Shielding

Xia, Nenghong; Du, Y.

doi:10.1109/temc.2013.2292558

Cited by 20 publications

(11 citation statements)

References 17 publications

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“…The new hybrid method is tested with the configuration presented in [6] . The results are compared with the M1, M1_R, and validated by the IES-FARADAY .…”

Section: Numerical Comparison and Validationmentioning

confidence: 99%

“…For the Integral Method, How to catch an effective meshing scheme has been being a research focus . The results of previous PEEC models [6][7] illustrate that the existing density of grid is not enough to get a precise solution . And it is little significance and unacceptable to increase the density of grid blindly .…”

mentioning

confidence: 99%

“…The average error of induced current density reduces from 3 .95% to 0 .96%, and for magnetization it reduces from 5 .87% to 2 .8% . It is obvious that the proposed meshing scheme improves the accuracy of solution .The new hybrid method is tested with the configuration presented in [6] . The results are compared with the M1, M1_R, and validated by the IES-FARADAY .…”

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confidence: 99%

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A hybrid meshing technique for ferromagnetic structures based on the PEEC method

Xia¹

2015

2015 IEEE Magnetics Conference (INTERMAG)

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A non-uniform meshing technique is presented for all the electromagnetic components . For the component which is perpendicular to the plate, the volume cells are assigned for the edge region . A hybrid numerical method (M3) is proposed . The IES-FARADAY based on BEM is presented for validation of the proposed methods . The proposed meshing scheme can improve the accuracy of solution effectively . The error of induced current and magnetization reduce significantly . I . Introduction Metallic plates are often employed in industry to shield power-frequency magnetic fields coming from bus bars and power cables [1][2] . To evaluate the magnetic fields shielded by the plates, numerical methods are normally adopted, such as BEM and Integral Method [3][4][5] . For the Integral Method, How to catch an effective meshing scheme has been being a research focus . The results of previous PEEC models [6][7] illustrate that the existing density of grid is not enough to get a precise solution . And it is little significance and unacceptable to increase the density of grid blindly . In this paper, firstly, a non-uniform meshing technique is presented, which is based on the principle of the distribution of electromagnetic quantities which are perpendicular to the plate . Compared with the results from M1 [6], which applies the uniform meshing scheme, the results from M1_R are at a significant higher accuracy . However, note that the assumption of double exponential function is not accurate in the edge region of the magnetic plate . Secondly, a new hybrid modeling method (named M3) is presented, which is expected to essentially reduce this error . The new hybrid method is tested with the configuration presented . The results are compared with the M1, M1_R, and validated by the IES-FARADAY . II . A HYBRID Mesh SchemeThe non-uniform meshing technique is presented, which is based on the principle of the distribution of electromagnetic quantities on the plate . While taking into account the skin effect from multi-surface in the edge region of the plate, a refinement is done in this region . In the other hand, some areas, which are closed to the external magnetic field source and with relatively stronger responses, are assigned mesh refinement as well . When the couplings are not only come from the upper and lower surfaces but also the side surface, a region for mesh refinement close to the side can be defined, which is roughly the skin depth of the plate . Furthermore, the electromagnetic components vary steeper when it is closer to the side boundary . A superimposed non-uniform meshing can be done during the refinement region . A set of weighting coefficients, such as [0 .1, 0 .2, 0 .3, 0 .4], can be defined to generate the non-uniform segmentation from the side boundary to the interior of plate . In order to avoid the influence of the great difference between the sizes of adjacent cells, the connection area is needed . It mitigates the difference of the different sizes of non-uniform grid . For the magnetic component (Mz) which is per...

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“…The new hybrid method is tested with the configuration presented in [6] . The results are compared with the M1, M1_R, and validated by the IES-FARADAY .…”

Section: Numerical Comparison and Validationmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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A hybrid meshing technique for ferromagnetic structures based on the PEEC method

Xia¹

2015

2015 IEEE Magnetics Conference (INTERMAG)

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“…PEEC models of 3D nonmagnetic conductors with eddy current present have been addressed in [17][18][19]. Extended PEEC formulations for analysing magnetic plates have been developed as well [20][21][22][23][24]. The effects of eddy current in thin magnetic plates have been discussed using an analytical formula [21].…”

Section: Introductionmentioning

confidence: 99%

Model of ferromagnetic steels for lightning transient analysis

Chen

2018

IET Science, Measurement & Technology

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“…For the Integral Method, how to catch an effective meshing scheme has been being a research focus. The results of previous PEEC models [5][6][7][8] illustrate that the existing density of grid is not enough to get a precise solution. And it is little significance and unacceptable to increase the density of grid blindly.…”

Section: Introductionmentioning

confidence: 99%

A Hybrid Meshing Technique for Ferromagnetic Structure Based on PEEC Method

Xia

Tian

et al. 2015

IEEE Trans. Magn.

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This paper presents a hybrid meshing scheme for improving the solution accuracy for modeling 3D ferromagnetic plates. Combining with the assumption of double exponential distribution across plate thickness, another analytical expression of the 2D bilinear basis functions is proposed for the distribution of electromagnetic components on the planar of the plate. Then, the mesh refinement is assigned on the edge region of the plate. The numerical testing validates this hybrid meshing technique and proves that it can reduce the number of unknowns and improve the accuracy of solution.Index Terms-Bilinear basis functions, hybrid, mesh, PEEC.

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An Efficient Modeling Method for 3-D Magnetic Plates in Magnetic Shielding

Cited by 20 publications

References 17 publications

A hybrid meshing technique for ferromagnetic structures based on the PEEC method

A hybrid meshing technique for ferromagnetic structures based on the PEEC method

Model of ferromagnetic steels for lightning transient analysis

A Hybrid Meshing Technique for Ferromagnetic Structure Based on PEEC Method

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