Stator turn fault is the most serious failure in the electrical machine drive which requires immediate detection techniques. Under such a turn fault, the fundamental change is that the high frequency (HF) impedance of the fault phase is significantly reduced due to the flux nullifying effect of the fault turns. Thus, this paper proposes a novel turn fault detection technique by using the equivalent HF impedance. It is derived by the HF voltage and current signals which are obtained by processing the phase voltages and currents with a bandpass filter. The effectiveness of the proposed is verified by extensive simulation and experimental tests on both surface mounted and interior PM machines. It is demonstrated that the performance of the proposed detection method is superior than the conventional HF current ripple based method. The investigation also confirms that the fault can be detected at an early stage by the proposed method.

中文翻译：

---

采用电加热催化剂的 48V 柴油轻度混合动力电动汽车的分布式能源和热管理


定子转动故障是电机驱动中最严重的故障，需要立即检测技术。在这种匝故障下，根本的变化是由于故障匝的磁通抵消效应，故障相的高频（HF）阻抗显着降低。因此，本文提出了一种利用等效高频阻抗的新型匝故障检测技术。它是由高频电压和电流信号导出的，这些信号是通过带通滤波器处理相电压和电流而获得的。该提议的有效性已通过表面安装和内部 PM 机器的广泛模拟和实验测试得到验证。结果表明，所提出的检测方法的性能优于传统的基于高频电流纹波的方法。调查还证实，通过所提出的方法可以在早期阶段检测到故障。