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首页> 外文期刊>Electric Power Components and Systems >Fault Diagnosis and Fault Tolerant Control of a Three-Phase VSI Supplying Sensorless Speed Controlled Induction Motor Drive
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Fault Diagnosis and Fault Tolerant Control of a Three-Phase VSI Supplying Sensorless Speed Controlled Induction Motor Drive

机译：三相VSI供电的无传感器速度控制感应电动机驱动器的故障诊断和容错控制

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摘要

Fault diagnosis in variable speed drives under inverter faults has been widely addressed in the literature. However, research activities in this field have been always focused only on sensored motor drives. This paper deals with a mixed model-based and signal-based approach for both insulated-gate bipolar transistor (IGBT) open-circuit fault diagnosis and fault tolerant control in sensorless speed-controlled induction motor (IM) drive. Sliding mode observer (SMO) is used for speed and stator currents estimation and simultaneously open-switch fault diagnosis. Unlike the classical sensored drive systems, this structure presents particular dynamics under faulty operation-mode which can be taken into account for fault detection and identification (FDI) process designing. The proposed diagnostic algorithm is based on similarity test between measured and estimated currents to define the FDI index in the inverter. The proposed method allows detection and localization of single and multiple IGBT open-switch faults. To improve the reliability of the motor drive, the ability of the SMO to reconstitute the motor state estimation after the disturbance stage of the FTC application is verified. The proposed FDI and FTC schemes are implemented on a dSPACE DS1104 controller board for a 3-kW IM drive system. Several experiments are displayed to show the effectiveness and feasibility of the proposed method.
机译：逆变器故障下变速驱动器的故障诊断在文献中已得到广泛解决。但是，该领域的研究活动始终只集中在感应电机驱动器上。本文研究了基于混合模型和基于信号的方法，用于无传感器速度控制感应电动机（IM）驱动器中的绝缘栅双极晶体管（IGBT）开路故障诊断和容错控制。滑模观察器（SMO）用于估算速度和定子电流，并同时进行开路故障诊断。与传统的传感器驱动系统不同，此结构在故障操作模式下呈现出特殊的动力学特性，可以将其用于故障检测和识别（FDI）过程设计。所提出的诊断算法基于测量电流和估计电流之间的相似性测试，以定义逆变器中的FDI指数。所提出的方法允许检测和定位单个和多个IGBT开路开关故障。为了提高电动机驱动器的可靠性，验证了SMO在FTC应用程序的干扰阶段之后重新构成电动机状态估计的能力。拟议的FDI和FTC方案在dSPACE DS1104控制器板上实现，用于3 kW IM驱动系统。实验表明，该方法的有效性和可行性。

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