Efficient finite element modelling of litz wires in toroidal inductors

Abstract Accurate understanding of losses and frequency‐dependent winding parameters have been an important aspect for selecting the right configuration of stranded conductors in power‐electronic inductors. An approach for modelling frequency‐dependent parameters of a winding with twisted wire bundl...

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Autores principales:	Jay Panchal, Antti Lehikoinen, Paavo Rasilo
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/ea72d7fcd01e49b48ef12ca9c93c2a16
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spelling	oai:doaj.org-article:ea72d7fcd01e49b48ef12ca9c93c2a162021-11-22T13:36:45ZEfficient finite element modelling of litz wires in toroidal inductors1755-45431755-453510.1049/pel2.12206https://doaj.org/article/ea72d7fcd01e49b48ef12ca9c93c2a162021-12-01T00:00:00Zhttps://doi.org/10.1049/pel2.12206https://doaj.org/toc/1755-4535https://doaj.org/toc/1755-4543Abstract Accurate understanding of losses and frequency‐dependent winding parameters have been an important aspect for selecting the right configuration of stranded conductors in power‐electronic inductors. An approach for modelling frequency‐dependent parameters of a winding with twisted wire bundles in toroidal inductors using a multi‐axial sliced finite element (FE) modelling approach is presented here. A 2D magnetodynamic FE problem is solved in several axial and radial slices of the inductor, accounting for the twisted conductor bundles by varying the conductor positions in the slices. Case studies are presented for different levels and pitch lengths of twisting. The approach is validated against 3D FE simulations in the case of 3–4 parallel strands and against measurements in the case of 75, 105 and 125 strands, which would be impossibly heavy for conventional 3D FE tools. The results provide insight into the effect of strand grouping, twisting levels and twisting pitch on the frequency‐dependent resistance of windings.Jay PanchalAntti LehikoinenPaavo RasiloWileyarticleElectronicsTK7800-8360ENIET Power Electronics, Vol 14, Iss 16, Pp 2610-2619 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Electronics TK7800-8360
spellingShingle	Electronics TK7800-8360 Jay Panchal Antti Lehikoinen Paavo Rasilo Efficient finite element modelling of litz wires in toroidal inductors
description	Abstract Accurate understanding of losses and frequency‐dependent winding parameters have been an important aspect for selecting the right configuration of stranded conductors in power‐electronic inductors. An approach for modelling frequency‐dependent parameters of a winding with twisted wire bundles in toroidal inductors using a multi‐axial sliced finite element (FE) modelling approach is presented here. A 2D magnetodynamic FE problem is solved in several axial and radial slices of the inductor, accounting for the twisted conductor bundles by varying the conductor positions in the slices. Case studies are presented for different levels and pitch lengths of twisting. The approach is validated against 3D FE simulations in the case of 3–4 parallel strands and against measurements in the case of 75, 105 and 125 strands, which would be impossibly heavy for conventional 3D FE tools. The results provide insight into the effect of strand grouping, twisting levels and twisting pitch on the frequency‐dependent resistance of windings.
format	article
author	Jay Panchal Antti Lehikoinen Paavo Rasilo
author_facet	Jay Panchal Antti Lehikoinen Paavo Rasilo
author_sort	Jay Panchal
title	Efficient finite element modelling of litz wires in toroidal inductors
title_short	Efficient finite element modelling of litz wires in toroidal inductors
title_full	Efficient finite element modelling of litz wires in toroidal inductors
title_fullStr	Efficient finite element modelling of litz wires in toroidal inductors
title_full_unstemmed	Efficient finite element modelling of litz wires in toroidal inductors
title_sort	efficient finite element modelling of litz wires in toroidal inductors
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/ea72d7fcd01e49b48ef12ca9c93c2a16
work_keys_str_mv	AT jaypanchal efficientfiniteelementmodellingoflitzwiresintoroidalinductors AT anttilehikoinen efficientfiniteelementmodellingoflitzwiresintoroidalinductors AT paavorasilo efficientfiniteelementmodellingoflitzwiresintoroidalinductors
_version_	1718417588477755392

Efficient finite element modelling of litz wires in toroidal inductors

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