电磁轴承静态支承特性分析与测试方法  

Analysis and Experimental Method of Static Bearing Characteristics for Magnetic Bearing

作　　者：刘海涛[1] 苏振中[1] 吴磊涛[1] 

机构地区：[1]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》2017年第2期93-98,114,共7页Electric machines & control application

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

摘　　要：电磁轴承作为磁悬浮转子系统的核心部件,其静态支承特性对于系统的动力学行为有关键性的影响。分析得到了电磁轴承的线性电磁力模型,并采用解析和有限元法计算了其电流和位移刚度系数。在此基础上,针对实际系统中的轴承刚度参数与基于设计参数得到的理论值偏差较大的问题,提出了一种不依赖外部装置且无需施加外部载荷,适用于卧式电磁轴承装置的电流和位移刚度等参数的通用测试方法。该方法克服了已有测试方法需借助辅助设备及操作复杂等缺点。最后,对该方法进行了试验验证,证明了所提测试方法的有效性。Magnetic bearing was a core component of the magnetically levitated rotor system. Its static bearing characteristics have a significant effects on dynamic behaviors of the system. The linear force model for magnetic bearings was analyzed, and used the analytic method and finite element method to calculate the current stiffness and displacement stiffness. On this basis, a universal experimental testing method independent of any exterior structure and suitable for current and displacement stiffness of the horizontal magnetic bearing was proposed to deal with a big deviation between the theoretical and practical bearing stiffness coefficients. This method overcomed the shortcomings of existing methods such as dependence of exterior structure and operational complexity. Finally, the experimental verification showed that the method was feasible and effective.

关 键 词：电磁轴承 静态支承 电流刚度 位移刚度 

分 类 号：TM301.2[电气工程—电机]