Yibo Wang;C. Q. Jiang;Xiaosheng Wang;Liping Mo;Weisheng Guo;Teng Long
{"title":"Laminated Cores in Inductive Power Transfer: A Viaduct Structure for Balanced Flux and Minimal Shielding Loss","authors":"Yibo Wang;C. Q. Jiang;Xiaosheng Wang;Liping Mo;Weisheng Guo;Teng Long","doi":"10.1109/TPEL.2025.3533697","DOIUrl":null,"url":null,"abstract":"This letter introduces an innovative laminated core structure for high-power inductive power transfer applications using Fe-based nanocrystalline materials. While these materials offer excellent core loss performance, traditional laminated cores often suffer from uneven flux density distribution. In addition, lamination gaps can increase leakage flux and shielding loss. To address these issues, we propose a viaduct lamination core structure inspired by viaduct bridges. This design employs horizontally laminated cores as the main flux conductors and vertically laminated cores as flux balancers. Finite-element method simulations demonstrate improved flux density and loss distribution, eliminating edge flux concentration. The design achieves a quasi-isotropic flux density distribution through anisotropic combinations. Experiments with up to 22-kW output power confirm the design's effectiveness, achieving a peak ac–ac efficiency of 97.4% and eliminating edge hot spots by a temperature reduction of over 35 °C. Shielding loss is nearly reduced to zero.","PeriodicalId":13267,"journal":{"name":"IEEE Transactions on Power Electronics","volume":"40 5","pages":"6464-6469"},"PeriodicalIF":6.6000,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Power Electronics","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10852021/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
This letter introduces an innovative laminated core structure for high-power inductive power transfer applications using Fe-based nanocrystalline materials. While these materials offer excellent core loss performance, traditional laminated cores often suffer from uneven flux density distribution. In addition, lamination gaps can increase leakage flux and shielding loss. To address these issues, we propose a viaduct lamination core structure inspired by viaduct bridges. This design employs horizontally laminated cores as the main flux conductors and vertically laminated cores as flux balancers. Finite-element method simulations demonstrate improved flux density and loss distribution, eliminating edge flux concentration. The design achieves a quasi-isotropic flux density distribution through anisotropic combinations. Experiments with up to 22-kW output power confirm the design's effectiveness, achieving a peak ac–ac efficiency of 97.4% and eliminating edge hot spots by a temperature reduction of over 35 °C. Shielding loss is nearly reduced to zero.
期刊介绍:
The IEEE Transactions on Power Electronics journal covers all issues of widespread or generic interest to engineers who work in the field of power electronics. The Journal editors will enforce standards and a review policy equivalent to the IEEE Transactions, and only papers of high technical quality will be accepted. Papers which treat new and novel device, circuit or system issues which are of generic interest to power electronics engineers are published. Papers which are not within the scope of this Journal will be forwarded to the appropriate IEEE Journal or Transactions editors. Examples of papers which would be more appropriately published in other Journals or Transactions include: 1) Papers describing semiconductor or electron device physics. These papers would be more appropriate for the IEEE Transactions on Electron Devices. 2) Papers describing applications in specific areas: e.g., industry, instrumentation, utility power systems, aerospace, industrial electronics, etc. These papers would be more appropriate for the Transactions of the Society which is concerned with these applications. 3) Papers describing magnetic materials and magnetic device physics. These papers would be more appropriate for the IEEE Transactions on Magnetics. 4) Papers on machine theory. These papers would be more appropriate for the IEEE Transactions on Power Systems. While original papers of significant technical content will comprise the major portion of the Journal, tutorial papers and papers of historical value are also reviewed for publication.