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首页> 外文期刊>Electric power systems research >Multiple criteria for high performance real-time diagnostic of single and multiple open-switch faults in ac-motor drives: Application to IGBT-based voltage source inverter
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Multiple criteria for high performance real-time diagnostic of single and multiple open-switch faults in ac-motor drives: Application to IGBT-based voltage source inverter

机译：交流电动机驱动器中单个和多个开路开关故障的高性能实时诊断的多个标准：在基于IGBT的电压源逆变器中的应用

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摘要

In this paper, the diagnosis of the open-switch damage in pulse-width modulated voltage source inverter (PWM-VSI) is addressed. The proposed strategy uses multiple normalized diagnostic variables and requires only the measurement of two output inverter currents that were used for a closed-loop control of the electric drive. It consists in analyzing and combining the information provided from the line currents shapes in alpha-beta frame and their normalized mean values, under both healthy and faulty operating conditions. In a first step, twenty-seven patterns built with output inverter currents in alpha-beta axis are used to detect the faulty legs. Six of them are dedicated to the IGBTs single-fault modes and the others to the multiple open-switch modes. A second step is achieved by normalizing the average line currents which allows not only the identification of the single-fault but also makes it possible to distinguish several multiple-fault cases having the same signatures in alpha-beta frame. The proposed technique has the features of simple algorithm, independence of the transient states, single and multiple faults diagnosis, fast fault diagnosis, and being easily included to the existing software without any additional sensors. Experimental results, using a dSpace system with DS1104 controller board based on the digital signal processor (DSP) TMS320F240 and a 3-kW squirrel-cage induction motor drive, are displayed to validate the effectiveness of the proposal. (C) 2016 Elsevier B.V. All rights reserved.
机译：本文探讨了脉宽调制电压源逆变器（PWM-VSI）中开路开关损坏的诊断。所提出的策略使用多个标准化的诊断变量，并且仅需要测量用于电动驱动器的闭环控制的两个输出逆变器电流。它包括在健康和故障操作条件下分析和组合从alpha-beta框架中的线电流形状提供的信息及其标准化平均值。第一步，使用以α-β轴为输出逆变器电流构建的27个模式来检测故障支路。其中六个专用于IGBT的单故障模式，其他专用于多个开路开关模式。通过标准化平均线电流来实现第二步，这不仅允许识别单故障，而且还可以区分在alpha-beta帧中具有相同特征的多个多故障情况。所提出的技术具有算法简单，瞬态状态独立，单故障和多故障诊断，快速故障诊断的特点，并且易于包含在现有软件中，而无需任何附加传感器。展示了使用带有基于数字信号处理器（DSP）TMS320F240的DS1104控制器板的dSpace系统和3 kW鼠笼式感应电动机驱动器的实验结果，以验证该建议的有效性。 （C）2016 Elsevier B.V.保留所有权利。

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