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首页> 外文期刊>International journal of applied electromagnetics and mechanics >A novel fault diagnosis method in SVPWM voltage-source inverters for vector controlled induction motor drives
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A novel fault diagnosis method in SVPWM voltage-source inverters for vector controlled induction motor drives

机译：矢量控制感应电动机驱动的SVPWM电压源逆变器故障诊断新方法

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摘要

This paper presents a novel single and multiple open circuit fault detection and identification method for three phase Voltage Source Inverter (VSI) fed vector controlled drives. In healthy condition, d-axis reference voltage is constant. When fault occurs, it is distorted, which is applied to detect the insulated-gate bipolar transistors (IGBTs) open circuit fault occurrence. The d-axis reference voltage distorted last for an interval time, the fault can be isolated by calculating the instant current vector rotating angles when the d-axis reference voltage gets distorted and recovered to constant, respectively, combined with space position of the current arc trajectory. The proposed method is fair robust to load torque changes and variable speed, and can be embedded into the existing drive software as a subroutine without excessive computational effort. The feasibility of the proposed fault diagnosis algorithm is evaluated by both simulation and experimental results.
机译：本文提出了一种新颖的单相和多相开路故障检测和识别方法，用于三相电压源逆变器（VSI）的矢量控制驱动器。在健康状态下，d轴参考电压恒定。当故障发生时，它会失真，用于检测绝缘栅双极型晶体管（IGBT）开路故障的发生。 d轴参考电压持续变形一段时间后，可以通过计算d轴参考电压分别畸变并恢复到恒定时的瞬时电流矢量旋转角度并结合电流电弧的空间位置来隔离故障。弹道。所提出的方法对于负载转矩变化和变速具有相当强的鲁棒性，并且可以作为子例程嵌入到现有的驱动软件中，而无需过多的计算工作。仿真和实验结果都对所提出的故障诊断算法的可行性进行了评估。

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