Analytical calculation and parameter analysis of 3D space magnetic field of permanent magnet and electromagnet hybrid Halbach array

被引：0
|
作者：
Luo C. [1 ,2 ]
Zhu K.-F. [3 ]
Zhang K.-L. [1 ,2 ]
Jing Y.-Z. [1 ,2 ]
机构：
[1] School of Electrical Engineering, Southwest Jiaotong University, Chengdu
[2] Key Laboratory of Magnetic Suspension Technology and Maglev Vehicle, Ministry of Education, Southwest Jiaotong University, Chengdu
[3] Chengdu Hengli Magnetoelectric Technology Co., Ltd, Chengdu
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 07期
关键词：
Analytical calculation; Electromagnet; Finite element method; Halbach array; Permanent magnet; Space magnetic field;
D O I：
10.15938/j.emc.2021.07.003
中图分类号：
学科分类号：
摘要：
Aiming at uncontrollability of the magnetic field of Halbach array of permanent magnet (PM) electrodynamic suspension (EDS), which makes the system easy to oscillate and unable to stabilize quickly under the external disturbances, a kind of permanent magnet (PM) and electromagnet hybrid Halbach array was studied. The adjustment control on space magnetic field of Halbach array was realized by winding active normal conductor coils on permanent magnet surface.The 3D space magnetic field of permanent magnet and electromagnetic hybrid Halbach array was calculated by analytical method and finite element method (FEM), and the influence of coil parameters on the space magnetic field is analyzed. The results indicated that the spatial magnetic field amplitude of the PM and electromagnet hybrid Halbach array increases approximately linearly with the decrease of the coil width or the increase of the coil current from -6 A/mm2 to 6 A/mm2, and is closer to the spatial magnetic field amplitude of the pure PM Halbach array; When the coil currents are ±6 A/mm2 and the coil widths are 20% and 30% of the array module width, comparing with the space magnetic field when the current is 0, the amplitude of space magnetic field can reach ±9% and ±13% respectively. © 2021, Harbin University of Science and Technology Publication. All right reserved.
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页码：20 / 29
页数：9
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