轴承故障工况下无刷直流电机的电感参数计算  

Calculation of Inductance Parameters of Brushless DC Motor Under Bearing Fault

作　　者：黄皓然 张博 HUANG Haoran;ZHANG Bo(School of Electrical Engineering,Shenyang University of Technology,Shenyang 110870,China)

机构地区：[1]沈阳工业大学电气工程学院,沈阳110870

出　　处：《微电机》2023年第10期1-6,共6页Micromotors

摘　　要：航空航天领域的电机发生轴承故障时无法立即停机检修,需要短时间内容错运行,为了解决运行中轴承故障量化问题,通过绕组电感变化表达轴承故障程度。文章分析了滚动轴承故障机理,根据滚动轴承不同部件故障的特点,建立了基于绕组函数法的解析模型计算轴承外圈、内圈、滚动体故障时的绕组电感,建立了有限元模型计算轴承保持架故障时的绕组电感。结果表明:无刷直流电机轴承故障后的电感会高于正常值,出现波动,其幅值与频率取决于轴承故障程度。In the field of aerospace,when the motor has bearing fault,it cannot be stopped immediately for maintenance,and it needs to be operated in a short time.In order to solve the problem of quantifying bearing faults during operation,the degree of bearing faults is expressed through changes in winding inductance.The article analyzed the fault mechanism of rolling bearings and established an analytical model based on the winding function method to calculate the winding inductance of bearing inner ring,outer ring,and rolling element faults according to the characteristics of different components of rolling bearings.A finite element model was established to calculate the winding inductance of bearing cage faults.The results indicate that the inductance of a brushless DC motor after bearing failure will be higher than the normal value and fluctuate,and its amplitude and frequency depend on the degree of bearing failure.

关 键 词：无刷直流电机 轴承故障 绕组函数法 绕组电感 

分 类 号：TM361[电气工程—电机]