基于保角变换的永磁偏置同极式径向磁轴承轴向电磁力计算  

Axial Force Calculation of Permanent Magnetic Biased Homo-polar Radial Magnetic Bearing Based on Conformal Mapping Method

作　　者：王抗[1] 王东[2] 吴磊涛[2] 苏振中[2] 张贤彪[2] 

机构地区：[1]东南大学伺服控制技术教育部工程研究中心,南京210096 [2]海军工程大学舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《微电机》2016年第3期4-9,共6页Micromotors

基　　金：国家重点基础研究发展计划973项目(2013CB035601);国家自然科学基金资助项目(511370005)

摘　　要：为了快速而准确的计算永磁偏置同极式径向磁轴承(径向磁轴承)的轴向电磁力,首先建立了径向磁轴承的磁路模型,对各个磁极与转子之间的磁位差进行了计算。采用保角变换的方法计算了径向磁轴承的端部磁场。依据电磁场的计算结果,建立了考虑齿槽效应的径向磁轴承轴向电磁力解析计算模型。建立了径向磁轴承的三维有限元仿真模型。有限元计算的结果验证了所建立的解析计算模型的有效性。For the sake of calculating the axial force of the permanent magnetic biased homo-polar radial magnetic bearing（ PMHRMB） exactly and rapidly,the magneto motive force between the stator poles and the rotor was obtained based on lumped magnetic circuit model firstly. Magnetic field distribution in the end region was obtained based on the conformal mapping method. The axial force calculation model was established with the consideration of the slotting effect. Three dimensional finite element analysis model was established in this paper. The proposed axial force calculation model was validated by the three dimension finite element analysis.

关 键 词：同极式径向磁轴承 永磁偏置 保角变换 三维有限元 

分 类 号：TH133.3[机械工程—机械制造及自动化]