A New Approach to Fault Diagnostics for Permanent Magnet Synchronous Machines Using Electromagnetic Signature Analysis
A New Approach to Fault Diagnostics for Permanent Magnet Synchronous Machines Using Electromagnetic Signature Analysis
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DOI：
10.1109/tpel.2012.2227808
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发表时间：
2013-08-01
影响因子：
6.7
通讯作者：
Krishnamurthy, Mahesh
中科院分区：
文献类型：
--
作者：
Da, Yao;Shi, Xiaodong;Krishnamurthy, Mahesh
本文提出了一种利用搜索线圈直接测量磁通来监测永磁同步电机健康状况和进行多故障检测的新方法。与其他基于频谱的故障检测方案不同，该方法仅利用所测电压的基频分量进行故障检测。因此，所提方案的性能不受非稳态转速或电源引入的谐波的影响。此外，还能够检测匝间短路的位置和静态偏心的方向，这是其他任何方案都无法做到的。尽管该技术具有侵入性，但它非常适用于关键任务应用以及新兴应用，如海上风力涡轮机、混合动力汽车技术和军事应用等，在这些应用中，故障的早期检测至关重要。文中通过有限元分析进行了二维模拟，以验证所提方法在不同运行条件下的有效性。还讨论了定子匝间短路、退磁和静态偏心的实验引入，并通过实验实施了所提方案以检验其有效性。
This paper proposes a novel approach to health monitoring and multifault detection in permanent magnet synchronous machines using direct flux measurement with search coils. Unlike other spectrum-based fault detection schemes, only the fundamental frequency component of the measured voltage is utilized for fault detection. Therefore, the performance of the proposed scheme is not affected by nonstationary speed or harmonics introduced by the power supply. In addition, location of interturn short circuits and direction of static eccentricity can be detected, which have never been done by any other scheme. In spite of the invasive nature of the technique, it is very suitable for mission-critical applications and emerging applications such as off-shore wind turbines, hybrid vehicle technology, and military applications, where early detection of faults is of paramount importance. 2-D simulations using finite element analysis have been presented to validate the proposed method under different operating conditions. Experimental introduction of stator interturn short circuit, demagnetization, and static eccentricity has been discussed, and the proposed scheme is experimentally implemented to examine its effectiveness.