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| Content Provider | IET Digital Library |
|---|---|
| Author | Ai, Liwang Zhang, Guomin Li, Wanjie Liu, Guole Chen, Jianhui Qiu, Qingquan |
| Abstract | It is usually difficult to obtain the radial levitation force of the radial-type superconducting magnetic bearing (SMB) due to the massive numerical calculations and the sophisticated experimental measurements. This study presents a method for fast calculating the radial levitation force of radial-type SMB, which is based on the infinitesimal method and the 2D finite-element method. During the modelling, the radial-type SMB is assumed to be composed circumferentially of infinite superconductor-permanent magnet (SC-PM) infinitesimals with shape of rectangular thin slice. The dependence of levitation force for the SC-PM infinitesimal on the air-gap length between the SC stator and the PM rotor can be obtained using the 2D finite-element model established in Cartesian coordinate system. Moreover, a simplified analytical model of calculating radial levitation force is developed based on the infinitesimal method and the circumferential distribution formula of non-uniform air-gap when the PM rotor exhibits radial eccentricity. The results of theoretical calculation and experimental measurement of radial levitation force show a good agreement, which verifies the feasibility of the proposed method. It has the advantages of fastness and easiness, and can be used as a theoretical tool for the design, optimisation and performance prediction of the radial-type SMB. |
| Starting Page | 1291 |
| Ending Page | 1296 |
| Page Count | 6 |
| ISSN | 17518660 |
| Volume Number | 12 |
| e-ISSN | 17518679 |
| Issue Number | Issue 9, Nov (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-epa/12/9 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2018.0063 |
| Journal | IET Electric Power Applications |
| Publisher Date | 2018-06-06 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | A.C. Machine D.C. Machines Finite Element Analysis High Temperature SuperConductor Magnetic Bearings Magnetic Levitation Other Magnetic Material Application And Device Permanent Magnets PM Rotor Radial Levitation Force Radial-type SMB Radial-type Superconducting Magnetic Bearing Rotors Stators |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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