This study proposes an effective diagnosis method for single and multiple open-switch faults (OSFs) in three-phase permanent magnet synchronous motor (PMSM) drives. The proposed method is based on the real-time estimation of the three-phase motor currents using three Kalman filters (KFs). Three residual signals are defined as the differences between the three-phase measured and estimated stator currents. The averaged normalised residual signals are used as diagnostic criteria for the detection of OSFs. The proposed method accurately detects the OSFs, localises the faulty switches and effectively discriminates between the OSFs and current sensor faults. The main superiorities of the proposed KF-based method are its fast detection time and high robustness to measurement noises/errors and load variations. Moreover, the proposed method is useful for both closed-loop and open-loop PMSM drives. The proposed method can be embedded as a subroutine in the drive control unit without any hardware extension. The effectiveness of the proposed method is confirmed through extensive simulations and several hardware-in-the-loop experiments on a testbed with a 1.5 kW PMSM and dSPACE1104 control board. In addition, the real-time feasibility of the proposed method using low-cost microprocessor technology is guaranteed by testing it on TMS320F28335 from Texas Instruments ^© .

中文翻译：

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基于卡尔曼滤波器的汽车永磁同步电动机驱动器实时断路故障诊断

这项研究提出了一种有效的诊断方法，用于三相永磁同步电动机（PMSM）驱动器中的单开和多开故障（OSF）。所提出的方法基于使用三个卡尔曼滤波器（KF）对三相电动机电流的实时估计。三个残余信号定义为三相测得的定子电流与估算的定子电流之间的差。平均的归一化残余信号用作检测OSF的诊断标准。所提出的方法可以准确地检测OSF，定位故障开关，并有效地区分OSF和电流传感器故障。所提出的基于KF的方法的主要优势在于其快速的检测时间以及对测量噪声/误差和负载变化的高鲁棒性。此外，所提出的方法对于闭环和开环PMSM驱动器都是有用的。所提出的方法可以作为子程序嵌入到驱动控制单元中，而无需任何硬件扩展。通过广泛的仿真和在带有1.5 kW PMSM和dSPACE1104控制板的测试台上进行的几个硬件在环实验，证实了该方法的有效性。此外，通过在德州仪器（TI）的TMS320F28335上对其进行测试，可以确保使用低成本微处理器技术的方法的实时可行性。5 kW PMSM和dSPACE1104控制板。此外，通过在德州仪器（Texas Instruments）的TMS320F28335上对其进行测试，可以确保使用低成本微处理器技术的方法的实时可行性。5 kW PMSM和dSPACE1104控制板。此外，通过在德州仪器（TI）的TMS320F28335上对其进行测试，可以确保使用低成本微处理器技术的方法的实时可行性。 ^© 。