Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations
Abstract The magnetic saturation of iron‐core will reduce the maximum output force, influence the linear force characteristic and control precision of the magnetic bearing. To avoid these problems, a modified iron‐core design rule for the alternating‐pole magnetic bearing is proposed. The thickness...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-03-01
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| Series: | IET Electric Power Applications |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/elp2.12161 |
| _version_ | 1828254929970528256 |
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| author | Shilei Xu Jinji Sun Zhipeng Wang |
| author_facet | Shilei Xu Jinji Sun Zhipeng Wang |
| author_sort | Shilei Xu |
| collection | DOAJ |
| description | Abstract The magnetic saturation of iron‐core will reduce the maximum output force, influence the linear force characteristic and control precision of the magnetic bearing. To avoid these problems, a modified iron‐core design rule for the alternating‐pole magnetic bearing is proposed. The thickness of both stator yoke and rotor journal should be designed as 3/4 of the stator pole width for the alternating‐pole configuration, which is successfully verified by 3D finite element method and experiments. Based on the improved design, the structural sizes, rotor iron losses, and force coupling characteristics of the paired‐pole configuration and the alternating‐pole configuration are compared. The results show that the size of the alternating‐pole bearing is smaller than that of the paired‐pole bearing; the alternating‐pole configuration generates slightly higher rotor iron loss than the paired‐pole configuration; the coupling strength of the alternating‐pole configuration is stronger than that of the paired‐pole configuration irrespective of whether the magnetic force coupling is caused by rotor displacements or control currents. The presented method and results can provide a reference for the design and selection of the active magnetic bearings. |
| first_indexed | 2024-04-13T02:06:40Z |
| format | Article |
| id | doaj.art-ff4fe1128ebf4bbbb7280a8a24da2fbd |
| institution | Directory Open Access Journal |
| issn | 1751-8660 1751-8679 |
| language | English |
| last_indexed | 2024-04-13T02:06:40Z |
| publishDate | 2022-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Electric Power Applications |
| spelling | doaj.art-ff4fe1128ebf4bbbb7280a8a24da2fbd2022-12-22T03:07:28ZengWileyIET Electric Power Applications1751-86601751-86792022-03-0116338239310.1049/elp2.12161Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurationsShilei Xu0Jinji Sun1Zhipeng Wang2School of Electrical and Electronic Engineering Shijiazhuang Tiedao University Shijiazhuang ChinaResearch Institute for Forontier Science Beihang University Beijing ChinaState Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing ChinaAbstract The magnetic saturation of iron‐core will reduce the maximum output force, influence the linear force characteristic and control precision of the magnetic bearing. To avoid these problems, a modified iron‐core design rule for the alternating‐pole magnetic bearing is proposed. The thickness of both stator yoke and rotor journal should be designed as 3/4 of the stator pole width for the alternating‐pole configuration, which is successfully verified by 3D finite element method and experiments. Based on the improved design, the structural sizes, rotor iron losses, and force coupling characteristics of the paired‐pole configuration and the alternating‐pole configuration are compared. The results show that the size of the alternating‐pole bearing is smaller than that of the paired‐pole bearing; the alternating‐pole configuration generates slightly higher rotor iron loss than the paired‐pole configuration; the coupling strength of the alternating‐pole configuration is stronger than that of the paired‐pole configuration irrespective of whether the magnetic force coupling is caused by rotor displacements or control currents. The presented method and results can provide a reference for the design and selection of the active magnetic bearings.https://doi.org/10.1049/elp2.12161magnetic forcesfinite element analysismagnetic bearingsrotorsstatorsmachine bearings |
| spellingShingle | Shilei Xu Jinji Sun Zhipeng Wang Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations IET Electric Power Applications magnetic forces finite element analysis magnetic bearings rotors stators machine bearings |
| title | Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations |
| title_full | Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations |
| title_fullStr | Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations |
| title_full_unstemmed | Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations |
| title_short | Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations |
| title_sort | improved design and analysis of a radial magnetic bearing with paired pole or alternating pole configurations |
| topic | magnetic forces finite element analysis magnetic bearings rotors stators machine bearings |
| url | https://doi.org/10.1049/elp2.12161 |
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