IEEE Transactions on Magnetics最新文献

IEEE Transactions on Magnetics Publication Information

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-02-26 DOI: 10.1109/TMAG.2025.3542946

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IEEE Magnetics Society Information

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-02-26 DOI: 10.1109/TMAG.2025.3542945

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IEEE Transactions on Magnetics Institutional Listings

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-02-26 DOI: 10.1109/TMAG.2025.3542947

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IEEE Transactions on Magnetics Publication Information

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-31 DOI: 10.1109/TMAG.2025.3533337

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3-D FE Analysis of Magnet Segmentation for Optimizing Thrust Force and Eddy Current Loss of Arc Linear Servo Motor

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-31 DOI: 10.1109/TMAG.2024.3521042

Zuhair Abbas;Jun-Hyeok Heo;Ikhlaq Ahmad;Jun-Kyu Kang;Jin Hur

{"title":"3-D FE Analysis of Magnet Segmentation for Optimizing Thrust Force and Eddy Current Loss of Arc Linear Servo Motor","authors":"Zuhair Abbas;Jun-Hyeok Heo;Ikhlaq Ahmad;Jun-Kyu Kang;Jin Hur","doi":"10.1109/TMAG.2024.3521042","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3521042","url":null,"abstract":"When employing high-magnetic co-energy sintered NdFeB magnets, permanent magnet linear synchronous machines (PMLSMs) exhibit several advantages over traditional induction and direct current machines, including greater thrust capability and efficiency. However, during operation at high frequencies, significant eddy current losses in the permanent magnet (PM) can result in elevated temperatures, increasing the risk of irreversible demagnetization. This issue is further compounded by the large air gap in such machines, making the thrust force a critical factor for ensuring efficient performance. A complete magnet segmentation (CMS) can be an effective method for reducing the PM eddy current losses, but it reduces the thrust characteristics and mechanical robustness of the PMLSM. Therefore, a partial magnet segmentation (PMS), namely, single-side PMS (SSPMS), is studied for the new arc-structured PMLSM to optimize the eddy current loss and thrust force. A comparison between the initial PM, CMS, and SSPMS is performed using the Ansys Maxwell 3-D finite element analysis (FEA) tool. The results demonstrate that the SSPMS configuration significantly reduces PM eddy current loss while maintaining the same thrust force. Moreover, it offers superior mechanical robustness and lower manufacturing costs compared to the conventional CMS.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-5"},"PeriodicalIF":2.1,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10865832","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107111","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}

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IEEE Magnetics Society Information

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-31 DOI: 10.1109/TMAG.2025.3533336

引用次数: 0

IEEE Transactions on Magnetics Institutional Listings

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-31 DOI: 10.1109/TMAG.2025.3533338

引用次数: 0

Study on the Overload Protection Characteristics of Rapid Disconnect Permanent Magnet Eddy Current Friction Torque Limiter

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-30 DOI: 10.1109/TMAG.2025.3534464

Yuting Wang;Kou Ziming;Hong Zhang;Qianyi Zhang

{"title":"Study on the Overload Protection Characteristics of Rapid Disconnect Permanent Magnet Eddy Current Friction Torque Limiter","authors":"Yuting Wang;Kou Ziming;Hong Zhang;Qianyi Zhang","doi":"10.1109/TMAG.2025.3534464","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3534464","url":null,"abstract":"This article proposes a new type of high-power rapid disconnect permanent magnet (PM) eddy current friction torque limiter (RDPMEFTL) in response to the existing situation of the friction torque limiter’s short life and poor reliability for overload protection devices for coal mine machinery. The RDPMEFTL’s basic principle is to combine the permanent magnetic eddy current transmission mechanism with friction clutch and to use the permanent magnetic eddy current structure to control the friction torque limiter’s opening and closing in order to achieve the transmission system’s overload protection. First, the basic structure and working principle of the PM friction torque limiter are described, and then, a 2-D analytical model of the slotted PM drive structure is given based on the subdomain method, and the distributions of its air-gap magnetic field and conductor currents are investigated. Then, we obtain the characteristics of the changes of its electromagnetic axial force and torque with the slip and air gap. Second, the electromagnetic–mechanical coupling model of the whole drive system was established by combining the Karnopp friction model with the electromagnetic model, and the dynamics and electromagnetic response of the starting, overloading, and stopping processes were analyzed. Compared with the dry friction torque limiter, the RDPMEFTL will effectively improve the reliability and service life of the drive system, reduce the corresponding downtime maintenance work, and increase the productivity. Finally, tests were conducted with a small prototype and the test results were compared with the results of the analytical solution and 3-D finite element analysis, and they were basically consistent.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 3","pages":"1-18"},"PeriodicalIF":2.1,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496535","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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Enhancing the Sensitivity and Detection Depth of a Single-Sided Magnetic Particle Spectrometer Using Ferrite Cores

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-28 DOI: 10.1109/TMAG.2025.3535758

Qibin Wang;Kaixiong Yang;Lingwen Hou;Haohao Yan;Yu Zeng;Yihan Wang;Franziska Schrank;Harald Radermacher;Volkmar Schulz;Shouping Zhu

{"title":"Enhancing the Sensitivity and Detection Depth of a Single-Sided Magnetic Particle Spectrometer Using Ferrite Cores","authors":"Qibin Wang;Kaixiong Yang;Lingwen Hou;Haohao Yan;Yu Zeng;Yihan Wang;Franziska Schrank;Harald Radermacher;Volkmar Schulz;Shouping Zhu","doi":"10.1109/TMAG.2025.3535758","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3535758","url":null,"abstract":"Magnetic particle spectroscopy (MPS), first developed in relation to magnetic particle imaging (MPI) since its introduction in 2005, has been widely applied in biomedical detection and the evaluation of magnetic nanoparticle (MNP) performance in MPI. Its high sensitivity, low cost, and portability make MPS an essential tool for these applications. However, traditional MPS devices are limited by their enclosed measurement chambers, which restrict their application to solutions placed in small test tubes. Therefore, developing MPS devices that are not constrained by the size of the subject is crucial for clinical applications. Single-sided MPS devices, which concentrate the coils on one side, are not restricted by the size of the object being measured, making them directly applicable to clinical research. However, single-sided MPS devices are currently limited in terms of detection depth and sensitivity due to the rapid attenuation of the magnetic field with distance. To address this issue, in this work, we propose incorporating a soft magnetic core (Mn-Zn ferrite) into the single-sided MPS to enhance the magnetic flux density of the excitation field, thereby increasing detection depth. Additionally, we introduce a surface receiving coil design to replace the traditional solenoidal receiving coil, further improving sensitivity. The results demonstrate that the sensitivity increases by approximately ten times, and the detection depth is doubled.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 3","pages":"1-8"},"PeriodicalIF":2.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496538","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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Calculation of Mutual Inductance of Two Coaxial Thick Coils With Rectangular Cross Section by Using Cylindrical Multipole Expansion

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2025-01-28 DOI: 10.1109/TMAG.2025.3535634

Filip Vučić;Davor Dobrota

{"title":"Calculation of Mutual Inductance of Two Coaxial Thick Coils With Rectangular Cross Section by Using Cylindrical Multipole Expansion","authors":"Filip Vučić;Davor Dobrota","doi":"10.1109/TMAG.2025.3535634","DOIUrl":"https://doi.org/10.1109/TMAG.2025.3535634","url":null,"abstract":"A triple power series expansion for mutual inductance of two coaxial thick coils with rectangular cross section is obtained. Previously developed calculation methods consist of either semi-analytical methods containing numerical calculations or exact expressions containing integrals that cannot be analytically evaluated. In contrast, the triple series expansion obtained in this article is a complete and purely analytical expression—a triple power series. The triple sum contains one free parameter that is restricted by necessary and sufficient convergence conditions. To apply the method in practice, the sums are truncated, with the choice of parameter significantly impacting convergence properties and obtained precision. A theoretical analysis and empirical tests were carried out to devise a heuristic algorithm for finding a good value for the free parameter. The method’s effectiveness and very high performance were verified by comparing it to the relevant literature. Especially good results are achieved in the far-field case with sub-microsecond execution times and more than 10 significant digits of precision.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 3","pages":"1-16"},"PeriodicalIF":2.1,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496560","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}

引用次数: 0