{"title":"3D Numerical Studies of a Radial-Type Superconducting Magnetic Bearing Consisting of HTS Coils and PM","authors":"Qi Xu;Yi Lin;Ruixiang Wang;Changhao Hu;Jianzhao Geng","doi":"10.1109/TASC.2025.3544616","DOIUrl":null,"url":null,"abstract":"High temperature superconducting (HTS) coils have promising applications in superconducting magnetic bearings (SMB). In this paper, we designed a radial-type SMB consists of permanent magnet (PM) rotor and HTS coil stator. The internal rotor is a Halbach array of PM and iron sheet. The external stator consists of two closed double pancake HTS coils connected in series and an open-loop coil. A three-dimensional (3D) finite element model was established to analyze the levitation force and radial stability of the proposed SMB. The results indicate that the SMB can support load of 4613 N under 120 A current. The SMB exhibits an axial stiffness of 911 N/mm and a radial stiffness of 435 N/mm, with stiffness decreasing as the coil current increases. This work contributes to exploring the potential of HTS coils in bearing applications and guides the design of SMB.","PeriodicalId":13104,"journal":{"name":"IEEE Transactions on Applied Superconductivity","volume":"35 5","pages":"1-5"},"PeriodicalIF":1.8000,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Applied Superconductivity","FirstCategoryId":"101","ListUrlMain":"https://ieeexplore.ieee.org/document/10916572/","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
High temperature superconducting (HTS) coils have promising applications in superconducting magnetic bearings (SMB). In this paper, we designed a radial-type SMB consists of permanent magnet (PM) rotor and HTS coil stator. The internal rotor is a Halbach array of PM and iron sheet. The external stator consists of two closed double pancake HTS coils connected in series and an open-loop coil. A three-dimensional (3D) finite element model was established to analyze the levitation force and radial stability of the proposed SMB. The results indicate that the SMB can support load of 4613 N under 120 A current. The SMB exhibits an axial stiffness of 911 N/mm and a radial stiffness of 435 N/mm, with stiffness decreasing as the coil current increases. This work contributes to exploring the potential of HTS coils in bearing applications and guides the design of SMB.
期刊介绍：
IEEE Transactions on Applied Superconductivity (TAS) contains articles on the applications of superconductivity and other relevant technology. Electronic applications include analog and digital circuits employing thin films and active devices such as Josephson junctions. Large scale applications include magnets for power applications such as motors and generators, for magnetic resonance, for accelerators, and cable applications such as power transmission.
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