Bearing Fault Numerical Model for the Closed-slot Rotor Submersible Motor

作     者：Zhe Ke Bokai Guan Chong Di Jingwen Yan Xiaohua Bao 

作者机构：School of Electrical Engineering and AutomationHefei University of TechnologyHefei 230009China School of Electrical and Computer EngineeringThe Ohio State UniversityColumbus OH 43210USA 

出 版 物：《Chinese Journal of Electrical Engineering》 (中国电气工程学报（英文）)

年 卷 期：2023年第9卷第2期

页      面：84-93页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 

基　　金：Supported by the National Natural Science Foundation of China(51977055) Major Science and Technology Program of Anhui Province(201903a05020042) Anhui Province Key Laboratory of Large-scale Submersible Electric Pump and Accoutrements 

主　　题：Bearing fault finite element method relative permeability variation region closed-slot rotor stator current 

摘      要：A numerical model of the bearing fault of a motor with a closed-slot rotor using the finite element method(FEM)is *** rotor’s radial motion can be regarded as static eccentric at the defect time points and healthy at other time *** frequency of the harmonic component is analyzed corresponding to bearing fault in stator current according to the radial movement of the motor ***,the relative permeability variation region is established to achieve the radial motion of the rotor with bearing ***,the relative permeability variation region is established in the health and static eccentric ***,the defect time points are estimated and the static eccentricity model by transient field is ***,the relative permeability of the variable region in the static eccentric model is imported into the variable region of the health model at the defect time *** simulation results show that the air gap flux density of the bearing fault model is different from that of the health model and static eccentric *** addition,the stator current contains harmonic components of the bearing *** analysis results prove the applicability of the proposed model.