This article proposes an integration method for interturn fault diagnosis and torque ripple minimization control of direct-torque-controlled surface-mounted permanent magnet synchronous machine (SPMSM) drive system without requiring the specific fault severity (short-circuited turn ratio, current). In this method, the interturn fault is detected and located based on the amplitude and initial phase angle of the zero-sequence voltage component (ZSVC). Both the torque injection and the improved flux observer are applied to reduce the torque ripple caused by the interturn fault. Furthermore, the torque injection and the improved flux observer are directly calculated by using the already obtained amplitude and initial phase angle of the ZSVC during the fault diagnosis process, without requiring the specific values of short-circuited turn ratio and fault current. The experimental results validate the effectiveness of the proposed integration method for the direct-torque-controlled SPMSM drive system.

中文翻译：

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直接转矩控制SPMSM驱动系统匝间故障诊断与转矩脉动最小化控制的集成


本文提出了一种直接转矩控制表面安装永磁同步电机（SPMSM）驱动系统匝间故障诊断和转矩脉动最小化控制的集成方法，无需具体故障严重程度（短路匝数比、电流）。该方法根据零序电压分量（ZSVC）的幅值和初始相角来检测和定位匝间故障。采用扭矩注入和改进的磁链观测器来减少匝间故障引起的扭矩脉动。此外，在故障诊断过程中，利用已获得的ZSVC的幅值和初始相角直接计算扭矩注入和改进的磁链观测器，而不需要短路匝数比和故障电流的具体值。实验结果验证了所提出的直接扭矩控制SPMSM驱动系统集成方法的有效性。