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000132371 001__ 132371 000132371 005__ 20240311111224.0 000132371 0247_ $$2doi$$a10.1109/APEC.2019.8721827 000132371 0248_ $$2sideral$$a115960 000132371 037__ $$aART-2019-115960 000132371 041__ $$aeng 000132371 100__ $$aUmetani, K. 000132371 245__ $$aSimple fully analytical copper loss model of litz wire made of strands twisted in multiple levels 000132371 260__ $$c2019 000132371 5060_ $$aAccess copy available to the general public$$fUnrestricted 000132371 5203_ $$aThe Litz wire has been widely utilized as a wire with a low copper loss under high-frequency operation. However, design optimization of the Litz wire is difficult because this wire generally has a complicated structure of thin strands twisted in multiple levels, which hinders both of the analytical and numerical prediction of the copper loss. To overcome this issue, recent studies have proposed the analytical models of the copper loss in the bundle of twisted strands, which is the basic components constituting the Litz wire. This paper constructs a simple analytical copper loss model of the Litz wire based on these preceding insights. In addition to these insights, the proposed model further considers the effect of the inclination angle of the strands to the Litz wire on the proximity effect loss. The proposed model was tested in comparison with the experimentally measured AC resistance of commercially available Litz wires. As a result, the predicted AC resistance showed good agreement with the measured ac resistance, suggesting the effectiveness of the proposed model. 000132371 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/ 000132371 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion 000132371 700__ $$0(orcid)0000-0001-7207-5536$$aAcero, J.$$uUniversidad de Zaragoza 000132371 700__ $$0(orcid)0000-0001-8399-4650$$aSarnago, H.$$uUniversidad de Zaragoza 000132371 700__ $$0(orcid)0000-0002-1284-9007$$aLucia, O.$$uUniversidad de Zaragoza 000132371 700__ $$aHiraki, E. 000132371 7102_ $$15008$$2785$$aUniversidad de Zaragoza$$bDpto. Ingeniería Electrón.Com.$$cÁrea Tecnología Electrónica 000132371 773__ $$g2019 (2019), 1257-1264$$pConf. proc. - IEEE Appl. Power Electron. Conf. Expo.$$tConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC$$x1048-2334 000132371 8564_ $$s414136$$uhttps://zaguan.unizar.es/record/132371/files/texto_completo.pdf$$yPostprint 000132371 8564_ $$s3299179$$uhttps://zaguan.unizar.es/record/132371/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint 000132371 909CO $$ooai:zaguan.unizar.es:132371$$particulos$$pdriver 000132371 951__ $$a2024-03-11-09:48:19 000132371 980__ $$aARTICLE
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