摘要
提出一种由三相逆变器驱动的六极径向–轴向主动磁轴承,与三极径向–轴向主动磁轴承相比,该磁轴承具有乘载力大、径向两自由度之间没有磁路耦合等优点。首先详细介绍六极径向–轴向主动磁轴承的基本结构、磁路、工作原理,并推导出其数学模型;然后,对其电磁特性和最大承载力进行有限元仿真分析。与三极径向–轴向主动磁轴承的分析结果相比,六极径向–轴向主动磁轴承的承载力提高了约33%,径向两自由度之间不存在磁路耦合,并解决了力–电流特性的非线性问题。最后,在样机的基础上进行验证实验和静态悬浮实验,验证了六极径向–轴向主动磁轴承的性能。实验结果表明,六极径向–轴向主动磁轴承的性能优于三极径向–轴向主动磁轴承,验证了理论分析的正确性。
In this paper,a new type of six-pole radial-axial active magnetic bearing(AMB)driven by an three-phase inverter was presented.Compared with the three-pole radial-axial AMB,the six-pole radial-axial AMB has the advantages of large bearing capacity,no electromagnetic cross-coupling between radial two degrees of freedom and so on.Firstly,the basic structure,magnetic circuits and working principle of the six-pole radial-axial AMB were analyzed in detail,and its mathematical models were deduced.Secondly,the electromagnetic characteristics and the maximum bearing capacity were simulated by finite element method.In comparison with the analysis results of the three-pole radial-axial AMB,the bearing capacity of six-pole radial-axial AMB is increased by about 33%,and there is no electromagnetic cross-coupling between radial two degrees of freedom,and the nonlinear problem of force-current characteristic is solved.Thirdly,the validation experiment and static suspension experiment based on the prototype were also conducted to verify the superior performance of the six-pole radial-axial AMB.Experimental results show that the performance of the proposed six-pole radial-axial AMB is superior to that of the three-pole radial-axial AMB,which verifies the accuracy of the theoretical analysis.
作者
朱熀秋
王绍帅
ZHU Huangqiu;WANG Shaoshuai(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第5期1653-1663,共11页
Proceedings of the CSEE
基金
国家自然科学基金项目(51675244)
江苏省重点研发计划项目(BE2016150).
关键词
六极
磁轴承
承载力
力–电流特性
非线性
six-pole
magnetic bearing
bearing capacity
force-current characteristic
nonlinear
作者简介
朱熀秋(1964),男,教授,博士生导师,主要研究方向为磁悬浮支承高速电机传动系统、无轴承电机、特种电机非线性控制等,zhuhuangqiu@ujs.edu.cn;通信作者:王绍帅(1992),男,硕士研究生,研究方向为磁悬浮轴承及其非线性控制,wangshaoshuai00@163.com。
