无轴承外转子异步电机转子导条对转矩及悬浮力的性能影响  

Performance Analysis on Torque and Suspension Force of Bearingless Induction Motor Bar

作　　者：孙宇新[1] 王浩[1] 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《电机与控制应用》2016年第6期23-27,共5页Electric machines & control application

基　　金：国家自然科学基金资助项目(61174055);国家自然科学基金资助项目(51307072)

摘　　要：在介绍了无轴承异步电机工作原理及径向力产生原理和转矩产生原理的基础上,推导了无轴承外转子异步电机数学模型。利用有限元方法分析了无轴承外转子异步电机的磁场,给出了磁场分布图,通过有限元软件模块参数化的功能对样机转子导条数及转子槽尺寸进行了分析。研究表明,转矩脉动及悬浮力脉动受转子导条数的影响较大,转子槽尺寸与平均转矩及平均悬浮力的关系受电机磁饱和的影响。Based on the working principle of BI motor with outer rotor, the mathematics model of the motor was deduced. Then, the distribution of magnetic field is simulated by FEM, and the relationship among radial suspension force, torque and rotor bar numbers was determined. Effects of magnetic saturation and bar dimensions on radial suspension force and torque were also studied. The results showed that torque ripple and suspension force ripple were influenced by rotor bar numbers. And relationshjp between average torque and average suspension force versus bar dimensions was affected by magnetic saturation.

关 键 词：无轴承电机 转子导条 有限元 感应电机 模型 外转子 

分 类 号：TM343[电气工程—电机]