{"title":"IEEE Magnetics Society Information","authors":"","doi":"10.1109/TMAG.2025.3589517","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3589517","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 8","pages":"C2-C2"},"PeriodicalIF":2.1,"publicationDate":"2025-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11097103","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Claas Ehmke;Quentin Boehler;Salvador Pané;Bradley J. Nelson
{"title":"Design and Optimization of Remagnetization Actuators","authors":"Claas Ehmke;Quentin Boehler;Salvador Pané;Bradley J. Nelson","doi":"10.1109/TMAG.2025.3585420","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3585420","url":null,"abstract":"Magnetization programming is a promising approach in the field of robotic magnetic navigation in which magnetized devices are manipulated using externally generated magnetic fields. This work explores the design and optimization of remagnetization actuators to dynamically reprogram the magnetization of the devices to be manipulated. The influence of the material and geometry of the magnet to be programmed and of the remagnetization circuit parameters on the performance of the programming is investigated. Performance assessment focuses on maximizing the achievable torque on the magnet and optimizing the dynamics and efficiency of the remagnetization. The key findings of this study are that AlNiCo 9 magnets can deliver superior torque compared to AlNiCo 5, and that using hollow instead of solid cylindrical magnets can improve the remagnetization process with only a limited reduction in its maximum achievable torque. These findings provide an important foundation for advancing the performance and reliability of remagnetization actuators in magnetic control systems.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 8","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Magnetoelastic Vector Hysteresis Modeling for Electromagnetic Devices: A Combination of a Multiscale Model With the Energy-Based Hysteresis Framework","authors":"K. Roppert;M. Kaltenbacher;L. Domenig;L. Daniel","doi":"10.1109/TMAG.2025.3584819","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3584819","url":null,"abstract":"In this work, the simplified multiscale model (SMSM) is incorporated into the energy-based (EB) quasi-static vector hysteresis model to represent the anhysteretic part of the material behavior. This approach enables the inclusion of effects such as mechanical stress, magnetostriction, material anisotropy, and crystallographic texture. By integrating the anhysteretic model into the EB framework, it becomes possible to account for dissipative effects (in our case, domain wall pinning) while utilizing detailed material information. To solve the EB model in conjunction with the SMSM, two approaches are pursued: a numerical optimization of a free energy functional and an explicit approximate variant, known as the vector play model (VPM). Both methods are compared in terms of computational performance, and the differences in results are demonstrated through the simulation of the cross section of an electric machine. Furthermore, the local as well as global behavior is investigated. It is shown that in an electrical machine configuration, the VPM provides a very satisfactory approximation to both local and global responses, together with a reduced computation time compared to the EB model. In the provided application case, it is shown that a shrink-fitting operation can lead to a 30% increase in the overall hysteresis losses.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 8","pages":"1-14"},"PeriodicalIF":2.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11062564","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"IEEE Magnetics Society Information","authors":"","doi":"10.1109/TMAG.2025.3582177","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3582177","url":null,"abstract":"","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 7","pages":"C2-C2"},"PeriodicalIF":2.1,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11061368","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144536471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Louis Denis;Elias Paakkunainen;Paavo Rasilo;Sebastian Schöps;Benoît Vanderheyden;Christophe Geuzaine
{"title":"Magnetic Field Conforming Formulations for Foil Windings","authors":"Louis Denis;Elias Paakkunainen;Paavo Rasilo;Sebastian Schöps;Benoît Vanderheyden;Christophe Geuzaine","doi":"10.1109/TMAG.2025.3584111","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3584111","url":null,"abstract":"e extend the foil winding homogenization method to magnetic field conforming formulations. We first propose a full magnetic field foil winding formulation by analogy with magnetic flux density conforming formulations. We then introduce the magnetic scalar potential in non-conducting regions to improve the efficiency of the model. This leads to a significant reduction in the number of degrees of freedom, particularly in 3-D applications. The proposed models are verified on two frequency-domain benchmark problems: a 2-D axisymmetric problem and a 3-D problem. They reproduce results obtained with magnetic flux density conforming formulations and with resolved conductor models that explicitly discretize all turns. Moreover, the models are applied in the transient simulation of a high-temperature superconducting coil. In all investigated configurations, the proposed models provide reliable results while considerably reducing the size of the numerical problem to be solved.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 8","pages":"1-7"},"PeriodicalIF":2.1,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Semi-Analytical Calculation of PM Eddy Current Loss in IPMSM Using Equivalent Magnetic Circuit Model","authors":"Feng-Yuan Yu;Jin-Ping Lu;Xue-Fei Qin;Yunchong Wang;Jian-Xin Shen","doi":"10.1109/TMAG.2025.3582775","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3582775","url":null,"abstract":"A semi-analytical method is proposed for rapidly calculating the eddy current loss in permanent magnets (PMs) of interior PM synchronous machines (IPMSMs), incorporating the effects of current harmonics and PM segmentation. The eddy current reaction field is solved with the equivalent magnetic circuit model extracted from finite element (FE) analysis. The internal and external equivalent magnetic circuits of the PM are established, respectively, with their parameters determined with FE sweeping and interpolation. The novelty of this work lies in fully considering the eddy current reaction effects, especially the interactions between the eddy current reaction fields in different PMs. The accuracy of the proposed method is validated through FE simulations of a 9-slot 6-pole IPMSM, demonstrating higher computational efficiency than the conventional FE method and higher accuracy than the existing semi-analytical methods. Furthermore, the proposed method is applicable to various winding and rotor configurations.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 8","pages":"1-15"},"PeriodicalIF":2.1,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144716194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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