This article investigates an enhanced model predictive torque control (MPTC) strategy to improve the fault-tolerant capability of a five-phase permanent magnet synchronous motor drive under open-circuit fault operation. The conventional fault-tolerant MPTC is focused on the control of the stator flux amplitude and the torque in the fundamental subspace, suffering from the influences of the unregulated harmonic subspace and the large computational burden. Hence, an MPTC strategy considering the control of both fundamental and harmonic subspaces is proposed. Apart from the stator flux and the torque, the harmonic current in the x-y subspace is also selected and controlled in this strategy. In addition, to mitigate the workload of the proposed MPTC, the voltage vectors are preselected according to the stator flux error. With the proposed MPTC, the regulation of both subspaces is realized. Furthermore, the computational burden is significantly alleviated. Finally, comparative experiments are conducted to validate the effectiveness of the proposed control strategy.

中文翻译：

---

谐波抑制和电压预选容错五相永磁同步电机增强模型预测转矩控制


本文研究了一种增强模型预测扭矩控制（MPTC）策略，以提高五相永磁同步电机驱动器在开路故障运行下的容错能力。传统的容错MPTC侧重于基波子空间中定子磁链幅值和转矩的控制，受到未调节的谐波子空间的影响和较大的计算负担。因此，提出了一种考虑基波和谐波子空间控制的MPTC策略。除了定子磁通和扭矩之外，该策略还选择和控制 xy 子空间中的谐波电流。此外，为了减轻所提出的 MPTC 的工作量，根据定子磁通误差预先选择电压矢量。通过提出的 MPTC，实现了两个子空间的调节。此外，计算负担也显着减轻。最后，进行对比实验验证所提出控制策略的有效性。