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首页> 外文会议>Annual Conference of the IEEE Industrial Electronics Society >Post-Fault FOC Transformation Matrix for Unequal Amplitude Currents During Dual Open-Phase Fault
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Post-Fault FOC Transformation Matrix for Unequal Amplitude Currents During Dual Open-Phase Fault

机译：双开阶段故障期间不等振幅电流的故障后焦谱转换矩阵

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摘要

Many critical five-phase PMSM drive systems require operation after a dual open-phase fault has occurred. Previously documented techniques suggest that injecting unequal amplitude currents into the non-faulted phases can minimize the torque ripple generated by this type of fault. However, the only control method which can control these currents is a phase current hysteresis controller, which generates larger magnitude harmonic currents and provides less control of the transient response when compared to field-oriented control (FOC). Therefore, this paper proposes a novel method for developing a post-fault FOC transformation matrix which can produce constant transformed current references for a given set of three unequal amplitude phase currents. This transformation matrix is then implemented in an FOC architecture with two proportional-integral current controllers and a phase back-EMF feed-forward block. An example post-fault transformation is outlined in this paper for a set of unequal amplitude post-fault currents which are calculated using a previously documented post-fault optimization algorithm. This transformation is then implemented in an experimental setup to provide experimental validation that the proposed post-fault FOC technique can accurately control unequal amplitude phase currents with minimal distortion.
机译：许多关键的五相PMSM驱动系统在发生双开相故障后需要操作。以前记录的技术表明，将不等幅度电流注入非断层相可以最小化通过这种类型的故障产生的扭矩纹波。然而，可以控制这些电流的唯一控制方法是相电流滞后控制器，其产生较大的谐波电流，并且与面向现场控制（Foc）相比，瞬态响应的控制较少。因此，本文提出了一种用于开发故障后焦谱变换矩阵的新方法，其可以为给定的三个不等幅度相电流产生恒定变换的电流参考。然后，该变换矩阵以具有两个比例积分电流控制器和相位反态馈电向块的FOC架构实现。本文概述了故障后变形后的示例，用于一组不等振幅后电流，这些电流使用先前记录的故障后优化算法计算。然后在实验设置中实现该变换，以提供实验验证，即所提出的故障后FOC技术可以准确控制具有最小失真的不等幅度电流。

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