噪声与振动控制2019，Vol.39Issue(4)：20-25,6.DOI:10.3969/j.issn.1006-1355.2019.04.004
异步电机静偏心状态电磁激励力的建模分析与实验研究
Modeling Analysis and Experimental Study of Electromagnetic Excitation Forces in an Induction Motor with Static Eccentricity
陆翔 1蒋伟康2
作者信息
- 1. 上海交通大学 机械系统与振动国家重点实验室,上海 200240
- 2. 上海交通大学 机械系统与振动国家重点实验室,上海 200240
- 折叠
摘要
Abstract
In order to analyze the interaction between rotor vibration and air-gap field in a working induction motor and predict the asymmetric radial electromagnetic force precisely, a mechanical and magnetic coupling model is set up. Based on the Lagrange-Maxwell equation and the 4-th order Range-Kutta method, the numerical solution of the rotor vibration response is obtained and then the electromagnetic force wave is calculated according to the rotor vibration eccentricity. At last, the impact of the rotor-shaft system flexural rigidity and the initial static eccentricity on the air-gap field and the electromagnetic force is analyzed. The accuracy of the theoretical modeling and numerical calculation is validated experimentally. The results show that the air-gap field changes because of the impact of the rotor vibration response of the eccentric induction motor. Smaller flexural rigidity and larger initial static eccentricity will cause more uneven air-gap field. As a result, the asymmetric radial electromagnetic force on the stator becomes bigger. It is concluded that the proposed theoretical model and numerical solution can provide an accurate calculation for the asymmetric electromagnetic force, especially for the motors with elongate shafts.关键词
振动与波/异步电机/气隙不均匀/电磁激励力/磁固耦合Key words
vibration and wave/ induction motor/ uneven air-gap/ electromagnetic excitation force/ mechanical and magnetic coupling分类
信息技术与安全科学引用本文复制引用
陆翔,蒋伟康..异步电机静偏心状态电磁激励力的建模分析与实验研究[J].噪声与振动控制,2019,39(4):20-25,6.
