Anisotropy of losses in grain-oriented Fe–Si

Comprehensive assessment of the magnetic behavior of grain-oriented steel (GO) Fe–Si sheets, going beyond the conventional characterization at power frequencies along the rolling direction (RD), can be the source of much needed information for the optimal design of transformers and efficient rotatin...

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Autores principales:	E. Ferrara, C. Appino, C. Ragusa, O. de la Barrière, F. Fiorillo
Formato:	article
Lenguaje:	EN
Publicado:	AIP Publishing LLC 2021
Materias:	Physics QC1-999
Acceso en línea:	https://doaj.org/article/af4d68d6b3f7418f95cb17ab452869b5
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spelling	oai:doaj.org-article:af4d68d6b3f7418f95cb17ab452869b52021-12-01T18:52:06ZAnisotropy of losses in grain-oriented Fe–Si2158-322610.1063/5.0066131https://doaj.org/article/af4d68d6b3f7418f95cb17ab452869b52021-11-01T00:00:00Zhttp://dx.doi.org/10.1063/5.0066131https://doaj.org/toc/2158-3226Comprehensive assessment of the magnetic behavior of grain-oriented steel (GO) Fe–Si sheets, going beyond the conventional characterization at power frequencies along the rolling direction (RD), can be the source of much needed information for the optimal design of transformers and efficient rotating machines. However, the quasi-monocrystal character of the material is conducive, besides an obviously strong anisotropic response, to a dependence of the measured properties on the sample geometry whenever the field is applied along a direction different from the rolling and the transverse (TD) directions. In this work, we show that the energy losses, measured from 1 to 300 Hz on GO sheets cut along directions ranging from 0° to 90° with respect to RD, can be interpreted in terms of linear composition of the same quantities measured along RD and TD. This feature, which applies to both the DC and AC properties, resides on the sample geometry-independent character of the RD and TD magnetization and on the loss separation principle. This amounts to state that, as substantiated by magneto-optical observations, the very same domain wall mechanisms making the magnetization to evolve in the RD and TD sheets, respectively, independently combine and operate in due proportions in all the other cases. By relying on these concepts, which overcome the limitations inherent to the semi-empirical models of the literature, we can consistently describe the magnetic losses as a function of cutting angle and stacking fashion of GO strips at different peak polarization levels and different frequencies.E. FerraraC. AppinoC. RagusaO. de la BarrièreF. FiorilloAIP Publishing LLCarticlePhysicsQC1-999ENAIP Advances, Vol 11, Iss 11, Pp 115208-115208-13 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999
spellingShingle	Physics QC1-999 E. Ferrara C. Appino C. Ragusa O. de la Barrière F. Fiorillo Anisotropy of losses in grain-oriented Fe–Si
description	Comprehensive assessment of the magnetic behavior of grain-oriented steel (GO) Fe–Si sheets, going beyond the conventional characterization at power frequencies along the rolling direction (RD), can be the source of much needed information for the optimal design of transformers and efficient rotating machines. However, the quasi-monocrystal character of the material is conducive, besides an obviously strong anisotropic response, to a dependence of the measured properties on the sample geometry whenever the field is applied along a direction different from the rolling and the transverse (TD) directions. In this work, we show that the energy losses, measured from 1 to 300 Hz on GO sheets cut along directions ranging from 0° to 90° with respect to RD, can be interpreted in terms of linear composition of the same quantities measured along RD and TD. This feature, which applies to both the DC and AC properties, resides on the sample geometry-independent character of the RD and TD magnetization and on the loss separation principle. This amounts to state that, as substantiated by magneto-optical observations, the very same domain wall mechanisms making the magnetization to evolve in the RD and TD sheets, respectively, independently combine and operate in due proportions in all the other cases. By relying on these concepts, which overcome the limitations inherent to the semi-empirical models of the literature, we can consistently describe the magnetic losses as a function of cutting angle and stacking fashion of GO strips at different peak polarization levels and different frequencies.
format	article
author	E. Ferrara C. Appino C. Ragusa O. de la Barrière F. Fiorillo
author_facet	E. Ferrara C. Appino C. Ragusa O. de la Barrière F. Fiorillo
author_sort	E. Ferrara
title	Anisotropy of losses in grain-oriented Fe–Si
title_short	Anisotropy of losses in grain-oriented Fe–Si
title_full	Anisotropy of losses in grain-oriented Fe–Si
title_fullStr	Anisotropy of losses in grain-oriented Fe–Si
title_full_unstemmed	Anisotropy of losses in grain-oriented Fe–Si
title_sort	anisotropy of losses in grain-oriented fe–si
publisher	AIP Publishing LLC
publishDate	2021
url	https://doaj.org/article/af4d68d6b3f7418f95cb17ab452869b5
work_keys_str_mv	AT eferrara anisotropyoflossesingrainorientedfesi AT cappino anisotropyoflossesingrainorientedfesi AT cragusa anisotropyoflossesingrainorientedfesi AT odelabarriere anisotropyoflossesingrainorientedfesi AT ffiorillo anisotropyoflossesingrainorientedfesi
_version_	1718404714195845120

Anisotropy of losses in grain-oriented Fe–Si

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