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一种用于五相感应电机驱动的开相容错直接转矩控制方案,以减轻系统不对称引起的XY平面电流

An Open-Phase Fault-Tolerant DTC Scheme for Five-Phase Induction Motor Drives to Mitigate the $XY$ Currents Due to System Asymmetries

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中文摘要

针对五相感应电机驱动中开相故障导致XY平面电流失控及定子电流高次谐波增加的问题,本文提出了一种改进的容错直接转矩控制(DTC)方案。通过优化虚拟电压矢量(VVs)的占空比分配,有效抑制了系统不对称带来的谐波分量,提升了故障后的运行性能。

English Abstract

The uncontrolled $xy$ subspace greatly enhances the high harmonic components present in the stator currents. Researchers have put significant efforts to address this challenge by exploring the utilization of virtual voltage vectors (VVs) in both healthy and postfault operating conditions. However, it has been observed that the predetermined duty ratios assigned to these VVs are inadequate to effec...
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SunView 深度解读

该文献聚焦于多相电机驱动的容错控制算法,虽然阳光电源目前的核心业务集中在光伏逆变器、储能PCS及风电变流器(主要为三相系统),与五相电机驱动存在差异,但其核心思想——通过优化虚拟电压矢量(VVs)来抑制谐波及提升系统容错能力,对阳光电源的电力电子变换器控制策略具有参考价值。特别是在风电变流器或大功率储能PCS的复杂工况下,引入类似的容错控制逻辑和虚拟矢量优化方法,有助于提升系统在电网故障或内部器件异常时的可靠性与电能质量。