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Sensorless Speed Control of a Fault-Tolerant Five-Phase PMSM Drives

机译：无传感器速度控制容错五相PMSM驱动器

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摘要

This paper introduces a novel method to achieve sensorless speed control of a Five-phase Permanent Magnet Synchronous Motor (PMSM) drive in case of a single-phase open-circuit fault regardless which phase is open. The motor performance when an open circuit fault occurs is as good as it is before the fault. The degradation in motor performance, when an open circuit fault occurs, is minimized due to implementing a novel control technique that is using the four remaining healthy currents. This strategy includes introducing two software modifications to the operation of the five motor post the fault. Firstly, an asymmetric SVPWM is used post the fault instead of multi-dimension SVPWM that is used before the fault. Secondly, a new algorithm is introduced to track the saliency post the fault. The new algorithm is considering the application of the new modulation technique. Moreover, it uses only the excitation in the healthy currents of the motor due to the IGBT switching actions. Simulation results presented in this paper shows that the performance of the motor over a wide speed range and at different load conditions is maintained post the fault.
机译：本文介绍了一种新的方法，实现了一种在单相开路故障的情况下实现五相永磁同步电动机（PMSM）驱动的无传感器速度控制，而无论哪个相打开。发生开路故障时的电机性能与故障面前一样好。当发生开放电路故障时，电动机性能的降解最小化由于实现了使用四种剩余健康电流的新型控制技术。该策略包括对故障的五个电机的操作引入两个软件修改。首先，使用非对称SVPWM在故障之前发出故障而不是多维SVPWM。其次，引入了一种新的算法来跟踪故障的显着性。新算法正在考虑新调制技术的应用。此外，由于IGBT切换动作，它仅在电机的健康电流中使用激励。本文提出的仿真结果表明，电动机在宽速度范围内和不同负载条件下的性能保持故障。

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