异步电动机断条与静偏心复合故障的电流特征

发布时间：2018-01-14 03:36

本文关键词：异步电动机断条与静偏心复合故障的电流特征　出处：《电机与控制学报》2017年06期 　论文类型：期刊论文

【摘要】：为了研究笼型异步电动机断条和静态偏心复合故障特征,采用多回路数学模型和改进的绕组函数法对复合故障下的定子电流特征进行了机理分析和仿真研究。首先建立笼型异步电动机的多回路数学模型,通过改进的绕组函数法计算了笼型异步电动机复合故障下的电感参数,推导了复合故障在定子电流中产生的特定谐波频率计算公式,然后建立了笼型异步电动机正常状态和复合故障时的有限元仿真模型,通过仿真对理论结果进行了验证。结果表明,复合故障发生时定子电流中除存在单一断条和静态偏心故障的特征频率外,还会产生一系列附加谐波分量,理论分析与仿真结果相符。
[Abstract]:In order to study the fault characteristics of cage asynchronous motor with broken bar and static eccentricity. The multi-loop mathematical model and the improved winding function method are used to analyze and simulate the stator current characteristics in complex faults. Firstly, the multi-loop mathematical model of cage asynchronous motor is established. Based on the improved winding function method, the inductance parameters of the cage asynchronous motor under the complex fault are calculated, and the formula for calculating the specific harmonic frequency generated by the complex fault in the stator current is derived. Then the finite element simulation model of cage asynchronous motor under normal condition and complex fault is established, and the theoretical results are verified by simulation. In addition to the characteristic frequency of single broken bar and static eccentricity fault, a series of additional harmonic components will be produced in the stator current of composite fault. The theoretical analysis is in agreement with the simulation results.
【作者单位】：太原理工大学煤矿电气设备与智能控制山西省重点实验室;
【基金】：国家自然科学基金(U1510112);国家自然科学基金(61472271)
【分类号】：TM343
【正文快照】： 0引言笼型异步电动机广泛应用于工农业生产中,但驱动负载的多变性和工作环境的恶劣性经常会导致笼型异步电动机故障。由于笼型异步电动机长期运行过程中的频繁启动、制动和重载运行,使转子断条故障发生率高达10%,且80%的断条故障都会导致气隙偏心[1]。气隙偏心主要分为两种:静

【相似文献】