2013
DOI: 10.1108/compel-04-2013-0129
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Efficient modeling of coil filament losses in 2D

Abstract: Purpose -The authors aim to search for a practical and accurate way to get good loss estimates for coil filaments in electrical machines, for example transformers. At the moment including loss estimations into standard finite element computations is prohibitively expensive for large coils. Design/methodology/approach -A low-dimensional function space for finite element method (FEM) is introduced on the filament-air interface and then extended into the filament to significantly reduce the number of unknowns per… Show more

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Cited by 2 publications
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“…Juxtaposition of thin or wired regions. Lamination stacks in magnetic cores, and wire and foil windings, are first classically considered via homogenization models (Dular et al, 2015b) or other approximations (Lehti et al, 2013) before being locally corrected (in critical regions of interest; in particular, for accurate eddy current losses), with an FE SPM derived from Dular et al (2015a) and applied in certain thin or wired regions separately with their details (e.g. single conductors with rectangular cross-section and possible oil ducts for cooling, which is usually unfeasible in a direct 3-D approach) (Klis et al, 2015), coupled to the remaining regions kept homogenized.…”
Section: Progressive Magnetostatic and Magnetodynamic Models Methodologymentioning
confidence: 99%
“…Juxtaposition of thin or wired regions. Lamination stacks in magnetic cores, and wire and foil windings, are first classically considered via homogenization models (Dular et al, 2015b) or other approximations (Lehti et al, 2013) before being locally corrected (in critical regions of interest; in particular, for accurate eddy current losses), with an FE SPM derived from Dular et al (2015a) and applied in certain thin or wired regions separately with their details (e.g. single conductors with rectangular cross-section and possible oil ducts for cooling, which is usually unfeasible in a direct 3-D approach) (Klis et al, 2015), coupled to the remaining regions kept homogenized.…”
Section: Progressive Magnetostatic and Magnetodynamic Models Methodologymentioning
confidence: 99%