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首页> 外文期刊>IEEE sensors journal >Orbit Analysis From a Stray Flux Full Spectrum for Induction Machine Fault Detection
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Orbit Analysis From a Stray Flux Full Spectrum for Induction Machine Fault Detection

机译：来自杂散通量全谱的轨道分析用于感应机故障检测

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Y Magnetic flux sensors in particular, combined with appropriate signal processing techniques, create excellent opportunities for extracting significant information for fault diagnosis of induction motors. Recent research has opened the possibility of simultaneously obtaining magnetic flux signals displaced approximately 90 degrees in time. This makes it possible to correlate the stray magnetic flux from different transducers. In this scenario, the Full Spectrum technique, widely used for vibration signals, can become a useful tool for displaying the relationship between different magnetic flux components in the frequency domain. Taking this into account, this work proposes the use of the filtered orbit, modified and obtained from the Full Spectrum, for interpreting the magnetic flux signals. This was done for the motor working under inter turn short circuits (three, six and nine turns short), unbalanced voltage fault or without fault conditions at different loads. Two characteristic frequencies of faults were considered, 180 Hz and 420 Hz. The experimental results showed the viability of the application of the technique and made it possible to identify the severity and the distinction of the faults studied as the orbital area and the direction of rotation were changed due to the presence of the fault. For example, for the incipient failure (three turns short), considering all loads, the orbit area at 180 Hz increased no less than 92% and the unbalanced voltage by no less than 885%. Additionally, the pattern of the orbit rotation at 420 Hz, was also affected by the operating condition of the motor under unbalanced voltage.
机译：Y磁通传感器尤其与适当的信号处理技术相结合，为提取了对感应电动机的故障诊断的重要信息创造了出色的机会。最近的研究开通了同时获得大约90度的磁通量信号的可能性。这使得可以将来自不同换能器的杂散磁通量相关联。在这种情况下，全谱技术广泛用于振动信号，可以成为用于显示频域中不同磁通量组件之间的关系的有用工具。考虑到这项工作，这项工作提出了使用过滤器的轨道，修改和从全谱获得，用于解释磁通量信号。这是为在跨匝间短路（三个，六个和九个匝数短），不平衡电压故障或不同负载的故障条件下工作的电动机进行的。考虑了两个特征频率，180 Hz和420 Hz。实验结果表明，该技术应用的可行性，并使得可以识别所研究的断层的严重程度，并且由于断层的存在而改变了所研究的故障的缺陷和旋转方向。例如，对于初期失败（三个转弯），考虑所有负载，180 Hz的轨道区域不低于92％，不平衡电压不低于885％。另外，在420Hz处的轨道旋转的图案也受到不平衡电压下电机的操作条件的影响。

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