Inverter-fed three-pole radial-axial hybrid magnetic bearings and their improved sturcture

被引：0
|
作者：
Zhu H.-Q. [1 ]
Zhou R. [1 ]
机构：
[1] School of Electrical and Information Engineering, Jiangsu University, Zhenjiang
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2021年 / 25卷 / 04期
关键词：
Carry capacity; Force-current characteristic; Hybrid; Inverter-fed; Magnetic bearings; Radial direction-axial direction; Six-pole;
D O I：
10.15938/j.emc.2021.04.011
中图分类号：
学科分类号：
摘要：
Owing to the asymmetry of the inverter-fed three-pole magnetic bearing and the condition that the sum of the three-phase current must be zero, the relationship between the radial suspension force and the control current is nonlinear and strong coupling. In order to solve this problem, a spatial symmetric six-pole structure is proposed in this paper. Firstly, the structure and working principle of the inverter-fed six-pole radial-axial hybrid magnetic bearing were introduced. The mathematical model was derived by the equivalent magnetic circuit method. Secondly, through theoretical analysis and 3-D FEM analysis, the force-current characteristics and maximum carrying capacity of the three-pole structure and the six-pole structure were obtained, respectively, and the results were analyzed and compared. Finally, the experimental results show that compared with the three-pole structure, the nonlinear between the suspension force and the control current of the six-pole structure is obviously improved, and the maximum bearing capacity of the six-structure is increased by 16%, which verifies the correctness of the theoretical analysis. © 2021, Harbin University of Science and Technology Publication. All right reserved.
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页码：88 / 95
页数：7
相关论文
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