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首页> 外文会议>8th IEEE Symposium on Diagnostics for Electrical Machines, Power Electronics Drives >Multiple open-circuit fault diagnosis in voltage-fed PWM motor drives using the current Park's Vector phase and the currents polarity
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Multiple open-circuit fault diagnosis in voltage-fed PWM motor drives using the current Park's Vector phase and the currents polarity

机译：使用电流Park的矢量相位和电流极性对电压供电的PWM电动机驱动器进行多次开路故障诊断

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摘要

Presently, condition monitoring and fault diagnostics in electric drives are already considered essential to optimize maintenance operations and increase reliability levels. Regarding fault-tolerant inverters, it is well known that reliable fault diagnostic methods are mandatory to trigger remedial actions. This paper presents a diagnostic method for multiple open-circuit faults in pulse-width-modulation (PWM) voltage source inverters (VSI) feeding ac motors, with a special focus on the issue of false alarms during transients, such as load or speed changes. The diagnostic method combines a detection method based on derivative of the current Park's Vector phase, which guarantees robustness to transients, with a localization method based on the currents polarity, which allows for multiple faults diagnosis. In order to prove the reliability and effectiveness of the proposed fault diagnostic method, several simulation and experimental results are presented, using a permanent magnet synchronous motor (PMSM) drive.
机译：目前，电力驱动器中的状态监视和故障诊断已被认为对优化维护操作和提高可靠性水平至关重要。关于容错逆变器，众所周知，可靠的故障诊断方法对于触发补救措施是必不可少的。本文提出了一种为交流电机供电的脉冲宽度调制（PWM）电压源逆变器（VSI）中的多个开路故障的诊断方法，特别着重于瞬态期间的虚假警报问题，例如负载或速度变化。该诊断方法将基于电流Park的Vector相导数的检测方法与基于电流极性的定位方法结合在一起，该方法可确保对瞬态信号的鲁棒性，该方法可对多个故障进行诊断。为了证明所提出的故障诊断方法的可靠性和有效性，使用永磁同步电动机（PMSM）驱动器，给出了一些仿真和实验结果。

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