[en] In this paper, a methodology for refining the large-scale solutions obtained by 2-D magnetodynamic homogenized models of high-frequency inductor windings is proposed, based on the subproblem finite-element method. Two approaches are developed, depending on the type of source terms, which are employed to compute the corrections (namely, volumic or surfacic). An analysis of the error committed by the homogenized model, on the local (current densities in the conductors) as well as the global (resistance of the winding) level, is conducted, and appropriate correction strategies are proposed. For instance, it is shown that correcting some conductors in the vicinity of the air gap of an inductor is sufficient to get an acceptable value for the resistance.
Disciplines :
Electrical & electronics engineering
Author, co-author :
De Grève, Zacharie; Université de Mons - UMONS > Department of Power Electrical Engineering
Dular, Patrick ; Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Gyselinck, Johan ; Université Libre de Bruxelles - ULB > Department of Bio-, Electro- and Mechanical Systems
Geuzaine, Christophe ; Université de Liège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Applied and Computational Electromagnetics (ACE)
Deblecker, Olivier; Université de Mons - UMONS > Department of Power Electrical Engineering
Lobry, Jacques; Université de Mons - UMONS > Department of Power Electrical Engineering
Language :
English
Title :
Refinement of Homogenized Magnetodynamic Models of Wound Inductors Using Finite-Element Subproblems
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Bibliography
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O. Bottauscio, V. C. Piat, M. Chiampi, M. Codegone, and A. Manzin, "Nonlinear homogenization technique for saturable soft magnetic composites," IEEE Trans. Magn., vol. 44, no. 11, pp. 2955-2958, Nov. 2008.
Z. De Grève, O. Deblecker, J. Lobry, R. V. Sabariego, P. Dular, and C. Geuzaine, "Analyzing and reducing error in 2-D frequency domain homogenization of windings for R, L parameters FE computation," in Proc. 14th IEEE Conf. Electromagn. Field Comput. (CEFC), Chicago, IL, USA, May 2010, p. 1.
P. Dular, R. V. Sabariego, M. V. F. da Luz, P. Kuo-Peng, and L. Krähenbühl, "Perturbation finite-element method for magnetic circuits," IET Sci. Meas. Technol., vol. 2, no. 6, pp. 440-446, Nov. 2008.
Z. De Grève, P. Dular, G. Meunier, C. Geuzaine, O. Deblecker, and J. Lobry, "Subproblem finite element refinement of homogenized dielectric layers in wound inductors for accurate local stresses computation," IEEE Trans. Magn., vol. 51, no. 3, 2015.
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