基于Simulink的三相异步电机内部故障瞬变过程仿真分析  

Simulation Analysis of Internal Fault Transient Process of Three-phase Asynchronous Motor Based on Simulink

作　　者：阚羽 双丰 KAN Yu;SHUANG Feng(School of Mechanical and Automotive Engineering,Anhui Polytechnic University,Wuhu 241000,China;School of Electrical Engineering,Guangxi University,Nanning 530004,China)

机构地区：[1]安徽工程大学机械与汽车工程学院,安徽芜湖241000 [2]广西大学电气工程学院,广西南宁530004

出　　处：《新乡学院学报》2020年第12期64-70,共7页Journal of Xinxiang University

基　　金：安徽工程大学科技成果转化项目(KZ43019005)。

摘　　要：为了研究影响三相异步电机内部故障瞬变的特殊参数,解决通过传统被动保护方式无法提前预测电机故障的问题,利用对称分量法建立了不平衡电压下三相异步电机在正、负序旋转坐标系及电流不平衡度的数学模型,并在Simulink环境下建立了三种特殊工况的仿真模型,比较了正常状态与故障状态下不同参数的变化趋势。仿真结果表明,电流幅值、功率因数和负序电流的分量值可作为判断三相异步电机故障的依据。In order to study the special parameters that affect the internal fault transient of three-phase asynchronous motor and solve the problem that the motor faults cannot be predicted in advance by the traditional passive protection method,the mathematical model of three-phase asynchronous motor in positive and negative sequence rotation coordinate system and current unbalance degree under unbalanced voltage was established by using the symmetric component method.The simulation models of three special conditions were established under Simulink environment.The variation trends of different parameters in normal state and fault state were compared.The simulation results show that the current amplitude,power factor and the component value of the negative sequence current can be used as the basis for judging the fault of the three-phase asynchronous motor.

关 键 词：三相异步电机 故障诊断 功率因素 负序分量 

分 类 号：TM343[电气工程—电机]