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Technol."],"published-print":{"date-parts":[[2024,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>This work proposes two alternative analytical models to evaluate the <jats:italic>ac<\/jats:italic> losses of high-temperature superconducting (HTS) tapes during their hysteretic and resistive modes. These models intend to extend the application range of state-of-the-art analytical models for current values higher than the critical one, i.e. for the resistive state, and to correctly predict the <jats:italic>ac<\/jats:italic> losses during the transition between the hysteretic and resistive modes. Two analytical models are proposed, one considering an extension of the Norris model for the HTS tape\u2019s resistive mode and the other based on a sigmoid function to characterize the hysteretic losses and their smooth transition to the resistive mode. Analytical models capable of estimating <jats:italic>ac<\/jats:italic> losses of superconducting (SC) tapes are an important tool for the design of complex SC systems, such as SC fault current limiters, SC electrical machines and SC cables. The proposed models are validated experimentally, for a 1st generation BSCCO tape and a 2nd generation REBCO tape. Finite element simulation is also carried out to verify the accuracy of the proposed models. Results show that the proposed extended-Norris model presents some deviation at the transition between the hysteretic and resistive modes, while the sigmoid model presents very accurate results for the whole spectrum of applied current. Also, the parameters of the sigmoid models are independent of the tape geometry.<\/jats:p>","DOI":"10.1088\/1361-6668\/ad1f7c","type":"journal-article","created":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T17:23:50Z","timestamp":1705512230000},"page":"035004","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Alternative analytical models for HTS tapes considering their AC hysteretic and resistive losses"],"prefix":"10.1088","volume":"37","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9674-5490","authenticated-orcid":true,"given":"Jo\u00e3o F P","family":"Fernandes","sequence":"first","affiliation":[]},{"given":"Lu\u00eds F D","family":"Bucho","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5536-9038","authenticated-orcid":true,"given":"F","family":"Ferreira da Silva","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1170-310X","authenticated-orcid":true,"given":"In\u00eas S P","family":"Peixoto","sequence":"additional","affiliation":[]},{"given":"Silvio","family":"Vaschetto","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7072-5184","authenticated-orcid":true,"given":"P J","family":"Costa Branco","sequence":"additional","affiliation":[]}],"member":"266","published-online":{"date-parts":[[2024,1,29]]},"reference":[{"key":"sustad1f7cbib1","doi-asserted-by":"publisher","DOI":"10.1088\/0953-2048\/29\/3\/034009","article-title":"An introduction to the design and fabrication progress of a megawatt class 2G HTS motor for the ship propulsion application","volume":"29","author":"Moon","year":"2016","journal-title":"Supercond. 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All rights, including for text and data mining, AI training, and similar technologies, are reserved.","name":"copyright_information","label":"Copyright Information"},{"value":"2023-06-22","name":"date_received","label":"Date Received","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-01-17","name":"date_accepted","label":"Date Accepted","group":{"name":"publication_dates","label":"Publication dates"}},{"value":"2024-01-29","name":"date_epub","label":"Online publication date","group":{"name":"publication_dates","label":"Publication dates"}}]}}