Detection of Static Eccentricities in Axial-Flux Permanent-Magnet Machines With Concentrated Windings Using Vibration Analysis
Detection of Static Eccentricities in Axial-Flux Permanent-Magnet Machines With Concentrated Windings Using Vibration Analysis
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DOI：
10.1109/tia.2015.2448672
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发表时间：
2015-06
影响因子：
4.4
通讯作者：
O. O. Ogidi-O.;P. Barendse;M. A. Khan
中科院分区：
文献类型：
--
作者：
O. O. Ogidi-O.;P. Barendse;M. A. Khan
振动分析（VA）已被提出用于电机故障诊断，但其有效性取决于故障引起的振动频率的准确确定。因此，本文探讨了VA在检测静态偏心（SE）在轴向磁通永磁（AFPM）电机集中绕组的适用性。利用标准信号处理技术，在频域和时频域中跟踪和检测由故障引起的电磁力引起的振动。更占主导地位的振动谐波分量的影响是，这是有关的最低模式的磁力在极/槽组合调查。结果表明，谐波的振幅随着偏心率的恶化而显著增加。沿着识别出的其他谐波分量，提出了将其作为AFPMs中SE检测的指标。
Vibration analysis (VA) has been proposed for fault diagnosis in electric machines, but its efficacy is hinged on accurate determination of vibrating frequencies due to faults. Thus, this paper explores the applicability of VA in detecting static eccentricity (SE) in an axial-flux permanent-magnet (AFPM) machine with concentrated windings. The vibrations induced by the electromagnetic forces incited by the fault are tracked and detected in both frequency and time-frequency domains using standard signal processing techniques. The more dominant vibration harmonic component affected is that which is related to the lowest mode of magnetic force in the pole/slot combination investigated. It is revealed that the amplitude of the harmonic increased considerably with worsening eccentricities. Along with other harmonic components identified, it is proposed as an index for SE detection in AFPMs.