期刊论文

Yang, Tong-Guang

中文

电机与控制学报

1007-449X

2015

19

6

109-114

10.15938/j.emc.2015.06.017

2009AA11Z217:国家高技术研究发展计划（863计划） 61273158:国家自然科学基金 11C0725:湖南教育厅科研项目

本校为第一且通讯机构

当进行感应电机转子断条故障诊断时,定子电流中(1 ± 2S) f_0故障特征频率容易被基波频率淹没,采用故障特征频率进行转子故障诊断难以达到满意效果。为解决故障特征频率被淹没的问题,提出一种基于改进二阶广义积分器锁相环技术的基波消去故障诊断方法。首先构建以改进二阶广义积分器为核心的单相锁相环,自适应捕捉定子电流基波频率和幅值,然后重构定子电流基波成份,并分离出故障特征电流,最后对故障特征电流进行频谱分析,凸显故障特征频率。该方法能在电网电压频率波动情况下自适应捕捉定子电流基波成份,具有较好的抗干扰能力; 而且不需要采集电压信号,节约硬件开销。实验结果表明: 该方法能对转...

In the case of induction motor broken rotor bar fault diagnosis, the conventional method based on stator current can't achieve satisfactory results because the (1+2S)f0 fault feature frequency is easily flooded by the fundamental frequency. In view of this situation, a novel fault diagnosis method based on improved second order generalized integrator phase locked loop (SOGI-PLL) technology was proposed. Firstly, single phase locked loop with improved second-order generalized integrator as the core was created to catch stator current fundamental...