基于解析模型的多气隙永磁偏置轴向磁轴承电磁优化设计  

Optimal Design of Permanent Magnet Biased Axial Magnetic Bearing with Multiple Air Gaps Based on Analytical Model

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

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

出　　处：《电机与控制应用》2016年第3期1-7,共7页Electric machines & control application

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

摘　　要：提出了一种多气隙的永磁偏置轴向磁轴承,分析了包含有永磁体边界的气隙区域的边界磁位函数条件,采用拉普拉斯方程求解了永磁体所产生的漏磁磁场,进而建立了轴向磁轴承的解析分析模型。分析了轴向磁轴承的电磁力需求,对永磁与电励磁比例选择进行了研究,并利用解析模型对轴向磁轴承的主要参数进行了优化设计。建立了轴向磁轴承的三维有限元分析模型,验证了电磁设计工作的正确性。A permanent magnet biased axial magnetic bearing with multiple air gaps（ PMAMB） was proposed. Based on the boundary conditions of the air gap regions which surrounded by the PMs,Laplace equations were applied to calculate the leakage flux, meanwhile the analytical model of the PMAMB was established. The force demand of the PMAMB was analyzed,while the ratio of the PM and current excited flux was studied in detail. Finally,the main parameters of the PMAMB were optimal designed based on the analytical model. The 3 D finite element analysis（ FEA） model was established,the correctness of the design work was valeted by the FEA results.

关 键 词：永磁偏置 轴向磁轴承 多气隙 优化设计 解析模型 

分 类 号：TM351[电气工程—电机]