Turn fault detection technique is of key importance for system safety, which can protect the machine and enable the appropriate mitigation strategies. In this article, an advanced turn fault detection method is investigated for an interior permanent magnet machine (IPM) using the ripple current induced by the inherent pulse width modulation (PWM) voltage harmonics. The resultant current harmonics under high-frequency voltage harmonics are analyzed for both healthy and turn fault conditions. The feasibility of the detection method is validated by both simulation studies and prototype tests. It is confirmed that the PWM ripple current-based diagnosis technique can be employed to detect the turn fault in IPM without introducing undesirable noises and vibrations, and it is capable to detect early turn fault.

中文翻译：

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基于脉宽调制纹波电流的内置永磁电机匝道故障检测研究


转向故障检测技术对于系统安全至关重要，它可以保护机器并启用适当的缓解策略。在本文中，利用固有脉宽调制 (PWM) 电压谐波感应的纹波电流，研究了一种针对内置式永磁电机 (IPM) 的先进匝故障检测方法。对健康和匝故障条件下高频电压谐波下产生的电流谐波进行分析。通过仿真研究和样机测试验证了该检测方法的可行性。经证实，基于 PWM 纹波电流的诊断技术可用于检测 IPM 中的匝故障，而不会引入不良噪声和振动，并且能够检测早期匝故障。