籍超男, 梁喆.基于高阶谱的异步电机定子匝间短路故障诊断方法研究[J].重庆工商大学学报(自然科学版),2020,37(6):1-6
JI Chao-nan, LIANG Zhe.Study on Diagnosis Method of Stator Inter turn Short Circuit of Asynchronous Motor Based on High Order Spectrum[J].Journal of Chongqing Technology and Business University(Natural Science Edition),2020,37(6):1-6
基于高阶谱的异步电机定子匝间短路故障诊断方法研究
Study on Diagnosis Method of Stator Inter turn Short Circuit of Asynchronous Motor Based on High Order Spectrum
  
DOI:
中文关键词:  异步电机  高阶谱  故障诊断  定子绕组
英文关键词:asynchronous motor  high order spectrum  fault diagnosis  stator winding
基金项目:
作者单位
籍超男, 梁喆 安徽理工大学 电气与信息工程学院安徽 淮南 232000 
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中文摘要:
      传统的信号频谱分析方法应用在信噪比低、故障特征不明显的异步电机定子匝间短路故障诊断中,往往会出现因为故障的频谱图差别不大而导致误判的问题,为此提出了一种基于高阶谱的定子匝间短路故障诊断方法。高阶谱相较于传统频谱分析,具有良好的抑噪性,同时还保留了信号的非线性相位信息,解决了定子匝间短路故障快速诊断的问题。通过理论联系实例分析表明:发生定子匝间短路故障与未发生故障的电流信号“最大幅值”处双谱水平切片图完全不同,且随着故障严重程度的增加,其谐波分量越多,幅值越大。由此验证了该方法可以有效地提取出信号中的非线性特征,完成了对异步电机定子匝间短路故障的诊断,具有良好的实际应用前景。
英文摘要:
      The traditional signal spectrum analysis method is applied to the diagnosis of stator inter turn short circuit fault with low signal to noise ratio and with no obvious fault characteristics, which often leads to the problem of misjudgment. Therefore, a stator inter turn short circuit fault diagnosis method based on high order spectrum is proposed. Compared with the traditional spectrum analysis, the high order spectrum has good noise suppression and preserves the nonlinear phase information of the signal, which solves the problem of fast diagnosis of stator inter turn short circuit fault. Through the theoretical analysis based on examples, it is shown that the bispectrum horizontal slice diagram at the "maximum amplitude" of the current signal with and without stator inter turn short circuit fault is completely different from it at the "maximum amplitude" of the current signal without fault. With the increasing of the degree of the fault, there are more harmonic weights and more amplitude values. Therefore, it is proved that the method can effectively extract the nonlinear characteristics of the signal, complete the diagnosis of the stator inter turn short circuit fault of the asynchronous motor and has good application prospect.
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