Comparison between optimized topologies of permanent magnet thrust bearings with back-iron

This paper deals with the optimization and the comparison of passive magnetic thrust bearings made up of radial stacks of permanent magnet rings. Various topologies are considered, depending on the polarization direction of the permanent magnet rings and the presence of back-iron. The coulombian app...

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Autores principales:	Maxence VAN BENEDEN, Virginie KLUYSKENS, Bruno DEHEZ
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	bearings back-iron coulombian approach method of image charges optimization permanent magnets Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/c0769a23678044caaf99bd852bbd2a8d
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id	oai:doaj.org-article:c0769a23678044caaf99bd852bbd2a8d
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spelling	oai:doaj.org-article:c0769a23678044caaf99bd852bbd2a8d2021-11-26T07:11:27ZComparison between optimized topologies of permanent magnet thrust bearings with back-iron2187-974510.1299/mej.17-00061https://doaj.org/article/c0769a23678044caaf99bd852bbd2a8d2017-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/4/5/4_17-00061/_pdf/-char/enhttps://doaj.org/toc/2187-9745This paper deals with the optimization and the comparison of passive magnetic thrust bearings made up of radial stacks of permanent magnet rings. Various topologies are considered, depending on the polarization direction of the permanent magnet rings and the presence of back-iron. The coulombian approach and the method of image charges are used to determine the load capacity of topologies with back-iron. On this basis each topology is optimized in order to minimize the permanent magnet volume for a fixed load capacity, airgap thickness and remanent flux density. Varying these parameters, scaling laws of the optimum permanent magnet ring dimensions are derived to allow fast sizing and comparison of the topologies. The latter highlights that the topology with Halbach configuration and back-iron is the most performant, but that the topology with axial polarization is almost as good.Maxence VAN BENEDENVirginie KLUYSKENSBruno DEHEZThe Japan Society of Mechanical Engineersarticlebearingsback-ironcoulombian approachmethod of image chargesoptimizationpermanent magnetsMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 4, Iss 5, Pp 17-00061-17-00061 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	bearings back-iron coulombian approach method of image charges optimization permanent magnets Mechanical engineering and machinery TJ1-1570
spellingShingle	bearings back-iron coulombian approach method of image charges optimization permanent magnets Mechanical engineering and machinery TJ1-1570 Maxence VAN BENEDEN Virginie KLUYSKENS Bruno DEHEZ Comparison between optimized topologies of permanent magnet thrust bearings with back-iron
description	This paper deals with the optimization and the comparison of passive magnetic thrust bearings made up of radial stacks of permanent magnet rings. Various topologies are considered, depending on the polarization direction of the permanent magnet rings and the presence of back-iron. The coulombian approach and the method of image charges are used to determine the load capacity of topologies with back-iron. On this basis each topology is optimized in order to minimize the permanent magnet volume for a fixed load capacity, airgap thickness and remanent flux density. Varying these parameters, scaling laws of the optimum permanent magnet ring dimensions are derived to allow fast sizing and comparison of the topologies. The latter highlights that the topology with Halbach configuration and back-iron is the most performant, but that the topology with axial polarization is almost as good.
format	article
author	Maxence VAN BENEDEN Virginie KLUYSKENS Bruno DEHEZ
author_facet	Maxence VAN BENEDEN Virginie KLUYSKENS Bruno DEHEZ
author_sort	Maxence VAN BENEDEN
title	Comparison between optimized topologies of permanent magnet thrust bearings with back-iron
title_short	Comparison between optimized topologies of permanent magnet thrust bearings with back-iron
title_full	Comparison between optimized topologies of permanent magnet thrust bearings with back-iron
title_fullStr	Comparison between optimized topologies of permanent magnet thrust bearings with back-iron
title_full_unstemmed	Comparison between optimized topologies of permanent magnet thrust bearings with back-iron
title_sort	comparison between optimized topologies of permanent magnet thrust bearings with back-iron
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/c0769a23678044caaf99bd852bbd2a8d
work_keys_str_mv	AT maxencevanbeneden comparisonbetweenoptimizedtopologiesofpermanentmagnetthrustbearingswithbackiron AT virginiekluyskens comparisonbetweenoptimizedtopologiesofpermanentmagnetthrustbearingswithbackiron AT brunodehez comparisonbetweenoptimizedtopologiesofpermanentmagnetthrustbearingswithbackiron
_version_	1718409742970257408

Comparison between optimized topologies of permanent magnet thrust bearings with back-iron

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