期刊论文

Yang, Tong-Guang

中文

电机与控制学报

1007-449X

2015

19

12

101-106

10.15938/j.emc.2015.12.015

2009AA11Z217:国家高技术研究发展计划（863计划） 61273158:国家自然科学基金 13A011:湖南省教育厅科究项目

本校为第一且通讯机构

提出一种基于变频器网侧电流频谱分析的感应电机定子故障诊断方法。当感应电机发生定子故障时,定子电流负序分量将通过逆变器、整流器向变频器网侧传播,将在网侧电流频谱中出现故障特征频率成分。分析电网负序电压对感应电机定子电流、变频器网侧电流的影响,发现电网负序电压分量在网侧电流中形成的故障特征频率与定子故障时的网侧电流故障特征频率存在明显不同,选择容易测取的网侧电流可构成定子故障诊断新判据。实验结果表明:利用变频器网侧电流频谱分析能有效进行定子故障诊断,且不受电网负序电压的影响。

One method of induction motor stator fault diagnosis based on the inverter input side (grid side) current spectrum analysis was proposed. When the induction motor stator fault occurs, the negative sequence component of stator current can ride through the inverter and rectifier to converter grid side, the fault characteristic frequency is found in the grid side current spectrum. Influence to stator current and converter grid side current produced by grid negative sequence voltage component was analyzed. The fault characteristic frequency of the ...