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首页> 外文期刊>Trends in Ecology & Evolution >A Fast and Robust Diagnostic Method for Multiple Open-Circuit Faults of Voltage-Source Inverters Through Line Voltage Magnitudes Analysis
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A Fast and Robust Diagnostic Method for Multiple Open-Circuit Faults of Voltage-Source Inverters Through Line Voltage Magnitudes Analysis

机译：一种快速稳健的诊断方法，通过线电压级分析进行电压源逆变器的多开关故障

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摘要

In this article, a fast and robust diagnostic method for multiple open-circuit (OC) faults is presented for voltage-source inverters. Only two line voltages are used as diagnosis variables, which is economic, simple, and can reduce the influence caused by the failure rate of information sources. Possible magnitudes of these line voltage vectors are characterized in detail both for the healthy and faulty operations. Then, several voltage features are extracted for diagnosis. Single-switch open-circuit faults and double-switch open-circuit faults can be accurately and quickly located through the proposed method. The fastest diagnostic process can be finished in 1/20 of the fundamental period. The diagnostic results of the proposed method are not affected by certain load OC faults, which may lead to false diagnosis of the existing methods. Moreover, the proposed method is robust to different control strategies, filter components, and carrier frequencies. Experiments are carried out on a dSPACE platform, and the effectiveness of the proposed method is verified.
机译：在本文中，为电压源逆变器提出了一种用于多个开路（OC）故障的快速且稳健的诊断方法。只有两条线电压用作诊断变量，这是经济，简单的，并且可以降低信息源的故障率造成的影响。这些线电压矢量的可能幅度用于健康和故障操作。然后，提取几种电压特征以进行诊断。通过所提出的方法可以准确且快速地快速地快速开启单开关开关开关断路器和双开关开关故障。最快的诊断过程可以在基本时期的1/20中完成。所提出的方法的诊断结果不受某些载荷OC断层的影响，这可能导致现有方法的假诊断。此外，所提出的方法对不同的控制策略，滤波器组件和载波频率是强大的。实验在DSPACE平台上进行，验证了所提出的方法的有效性。

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