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首页> 外文期刊>Trends in Ecology & Evolution >Virtual-Stator-Flux-Based Direct Torque Control of Five-Phase Fault-Tolerant Permanent-Magnet Motor With Open-Circuit Fault
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Virtual-Stator-Flux-Based Direct Torque Control of Five-Phase Fault-Tolerant Permanent-Magnet Motor With Open-Circuit Fault

机译：基于虚拟定子通量的磁通电气直接扭矩控制，具有开路故障的五相容错永磁电动机

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摘要

five-phase fault-tolerant permanent-magnet (FTPM) motor can offer high torque density, low torque ripple, and good fault-tolerance. To improve operational performance under open-circuit fault condition, this article proposes a novel direct torque control (DTC) based on virtual stator flux strategy for an FTPM motor drive. The novelty of the proposed strategy is the development of virtual stator flux, which is used to achieve circular trajectories of current and rotating magneto-motive force vectors, and to derive feedforward voltage. Additionally, optimal fault-tolerant current references get derived based on maximum torque criterion, and then combined with reduced-order orthogonal decomposition matrices deduced from them, the feedforward voltage is used to eliminate asymmetrical motor behavior under the fault condition. Hence, the DTC becomes applicable to the FTPM motor drive under open-circuit fault condition. This control strategy not only enhances the torque performance with smooth torque and high dynamic response but also allows minimal reconfiguration of the control structure from healthy operation to fault-tolerant operation. The simulation and experimental results are given to verify the feasibility of the proposed strategy.
机译：五相容错永磁体（FTPM）电机可提供高扭矩密度，低扭矩纹波，良好的容错。为了提高开路故障条件下的运行性能，本文提出了一种基于FTPM电机驱动器虚拟定子通量策略的新型直接扭矩控制（DTC）。拟议策略的新颖性是发展虚拟定子磁通，用于实现电流和旋转磁动力矢量的圆形轨迹，并导出前馈电压。另外，最佳容错电流参考基于最大扭矩标准导出，然后与从它们推导的减小的正交分解矩阵结合，前馈电压用于消除故障条件下的不对称电动机行为。因此，DTC在开路故障状态下适用于FTPM电机驱动器。该控制策略不仅提高了具有平滑扭矩和高动态响应的扭矩性能，而且还允许将控制结构的重新配置从健康运行到容错操作。仿真和实验结果验证了拟议策略的可行性。

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