IEEE Transactions on Magnetics最新文献_第8页

Investigate on the Electromagnetic and Loss Characteristics of NI HTS Multi-Pancake Coil During Charging Process NI高温超导多煎饼线圈在充电过程中的电磁特性和损耗特性研究

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-04 DOI: 10.1109/TMAG.2024.3502443

Leiwen Yue;Wenhai Zhou;Rui Liang;Liang Yan;Shijie Shi;Jiafeng Cao

{"title":"Investigate on the Electromagnetic and Loss Characteristics of NI HTS Multi-Pancake Coil During Charging Process","authors":"Leiwen Yue;Wenhai Zhou;Rui Liang;Liang Yan;Shijie Shi;Jiafeng Cao","doi":"10.1109/TMAG.2024.3502443","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3502443","url":null,"abstract":"Non-insulated (NI) high-temperature superconducting (HTS) coil has become the core component of superconducting equipment in many high-tech applications because of its excellent electrothermal stability and self-protection characteristics. Due to the absence of turn-to-turn insulation, the electromagnetic behavior of the NI HTS coil during charging is very different from that of a traditional insulated (INS) coil. Many of its problems in engineering applications have not been fully studied. Therefore, the electromagnetic and loss characteristics of the NI HTS multi-pancake coil wound with (RE)Ba2Cu3Ox (REBCO) conductors during the charging process are studied in this article. A lumped equivalent circuit model (LECM) of NI HTS multi-pancake coil is combined with a finite element model (FEM) based on H-formulation. The LECM is used to calculate the current distribution and turn-to-turn loss, and the FEM is used to calculate the magnetization loss of the superconducting layer. The results show that after increasing the difference of the resistance or inductance in the multi-pancake coil, some coils will produce reverse circumferential current and the reflux phenomenon only exists in the early stage of charging. Increasing the number of coil layers will extend the coil charging time. Increasing the charging rate will significantly increase the rising rate and peak value of the coil radial current, making the coil quench risk greater. For the charging loss, the total loss of the multi-pancake coil is several times that of the single-pancake coil. Compared to the INS multi-pancake coil, the NI multi-pancake coil has a smaller magnetization loss rise rate but a larger total charging loss under the same conditions. Therefore, more attention should be paid to the NI multi-pancake coil in the application of superconducting devices.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-10"},"PeriodicalIF":2.1,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142905841","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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Position Estimation Method of a Permanent Magnet Synchronous Motor Based on Moving Horizon Estimation EKF Algorithm

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-04 DOI: 10.1109/TMAG.2024.3511353

Guang-Zhong Cao;Hao-Han Zhou;Su-Dan Huang;Hong-Jin Hu;Jiangbiao He

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Proposal for Design Method of Shared Rotor to Improve Eddy Current Loss in SPM Type Magnetic Geared Motor

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-02 DOI: 10.1109/TMAG.2024.3509898

Beom-Seok Byeon;Eui-Jong Park;Yong-Jae Kim

{"title":"Proposal for Design Method of Shared Rotor to Improve Eddy Current Loss in SPM Type Magnetic Geared Motor","authors":"Beom-Seok Byeon;Eui-Jong Park;Yong-Jae Kim","doi":"10.1109/TMAG.2024.3509898","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3509898","url":null,"abstract":"When integrating a magnetic gear and a motor into a single unit, the shared rotor simultaneously incorporates permanent magnets used for the input-side rotor of the magnetic gear and those utilized in the motor. This design results in both components sharing the same rotor structure. This integration marks a critical juncture where the magnetic gear and motor unite into a single device. However, it has been observed that this area experiences significant losses due to the extensive use of permanent magnets, leading to high eddy current losses in the shared rotor. In addition, the iron core of the shared rotor contributes significantly to losses from iron losses in the magnetic gear section. Therefore, this article discusses various design approaches aimed at reducing losses occurring in the shared rotor. The design approach used methods to maintain the torque density of conventional magnetic gears while reducing the usage of permanent magnets and decreasing eddy current losses from the permanent magnets. In addition, to improve iron losses originating from the iron core of the shared rotor, the approach involved dividing the iron core into segments.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 2","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107163","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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Scattering Invariant Mode Wave Propagation in 3-D Structure 三维结构中的散射不变模波传播

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-02 DOI: 10.1109/TMAG.2024.3509512

Olivér Csernyava;József Pávó;Zsolt Badics

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Study on Performance Changes of EV Traction Motor Applying CFRP Sleeve to IPMSM

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-02 DOI: 10.1109/TMAG.2024.3509873

Si-Uk Jung;Dong-Su Kim;Jae-Seung Lee;Jae-Woo Jung

{"title":"Study on Performance Changes of EV Traction Motor Applying CFRP Sleeve to IPMSM","authors":"Si-Uk Jung;Dong-Su Kim;Jae-Seung Lee;Jae-Woo Jung","doi":"10.1109/TMAG.2024.3509873","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3509873","url":null,"abstract":"In general, the interior permanent magnet synchronous motor (IPMSM) is mainly used as the traction motor of electric vehicles. IPMSM uses a rib and bridge structure to prevent permanent magnets (PMs) from being separated by centrifugal force when the motor rotates. Increasing the thickness of the ribs and bridges to satisfy rigidity at high speeds acts as a cause of increased leakage flux, thereby reducing motor performance. In this article, to improve the performance of IPMSM, we benchmark existing products to derive a proto analysis model and verify it through testing. In addition, the rib and bridge shapes that cause leakage flux are removed from the proto model and a carbon fiber-reinforced plastic (CFRP) sleeve is applied. Next, stress analysis is performed to confirm whether the safety factor is met at the required maximum speed. Also, as a result of comparing the no-load characteristics, it was confirmed that the leakage flux decreased and the back electromotive force (Back EMF) increased. However, in the case of the CFRP model with increased Back EMF, the current for field weakening control increases, making it difficult to drive at high speed. Therefore, an improvement design was performed to bring the field weakening current to the same level as the proto model. As a result, the CFRP model had a similar performance to the proto model and improved efficiency.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 3","pages":"1-4"},"PeriodicalIF":2.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143496582","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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Identification of an Arbitrary-Surface Harmonic Magnetic Model From Close Measurements 近距离测量中任意表面谐波磁模型的识别

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-12-02 DOI: 10.1109/TMAG.2024.3510643

Gauthier Derenty-Camenen;Olivier Chadebec;Olivier Pinaud;Laure-Line Rouve;Steeve Zozor

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Spinor Formulation of the Landau–Lifshitz–Gilbert Equation With Geometric Algebra Landau-Lifshitz-Gilbert方程的旋量几何表达式

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-29 DOI: 10.1109/TMAG.2024.3509214

Kristjan Ottar Klausen;Snorri Ingvarsson

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Easy-Plane Alignment of Anisotropic Biofluid Crystals in a Magnetic Field: Implications for Rod Orientation 各向异性生物流体晶体在磁场中的易平面排列：对棒取向的影响

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-27 DOI: 10.1109/TMAG.2024.3507612

Robert J. Deissler;Robert Brown

{"title":"Easy-Plane Alignment of Anisotropic Biofluid Crystals in a Magnetic Field: Implications for Rod Orientation","authors":"Robert J. Deissler;Robert Brown","doi":"10.1109/TMAG.2024.3507612","DOIUrl":"https://doi.org/10.1109/TMAG.2024.3507612","url":null,"abstract":"We study the orientation in a uniform magnetic field of rod-like anisotropic biofluid crystals with an easy plane that makes an oblique angle with the crystal’s c-axis. For a sufficiently strong field, these crystalline rods orient themselves, such that the crystal’s easy plane is parallel to the magnetic field, the rod’s direction being defined as the direction of the crystal’s c-axis. As the rod rotates about the crystal’s hard axis, there will, therefore, be a range of angles that the rod makes with the magnetic field. We detail this behavior by first providing the illustrations of hemozoin crystals at various orientations. These illustrations clearly demonstrate that the orientation angle that the crystalline rod makes with respect to the magnetic field varies from about 30° to 150°. We also derive an analytical expression for the probability density function (pdf) for the orientation angle. We find that the orientation angles are not uniformly distributed between the limits of 30° and 150°, but rather tend to cluster near these limits. This suggests experimental tests and addresses confusion about the rod orientation found in past literature. The relevance to other anisotropic biofluid crystals, such as those produced by gout, is also discussed.","PeriodicalId":13405,"journal":{"name":"IEEE Transactions on Magnetics","volume":"61 1","pages":"1-8"},"PeriodicalIF":2.1,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142912399","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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TechRxiv: Share Your Preprint Research with the World! TechRxiv：与世界分享您的预印本研究成果！

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-26 DOI: 10.1109/TMAG.2024.3504413

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Member Get-A-Member (MGM) Program 会员注册（MGM）计划

IF 2.1 3区工程技术

IEEE Transactions on Magnetics Pub Date : 2024-11-26 DOI: 10.1109/TMAG.2024.3504412

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