This article proposed a predictive flux control strategy for permanent magnet synchronous machines based on flux trajectory optimization. Instead of minimizing the instantaneous flux tracking error at the end of each sampling period, the effect of different control sets on flux trajectories within the entire sampling interval is taken into account in the cost function. As a result, steady-state torque and flux ripples can be suppressed. Besides, inaccurate sector determination found in the conventional predictive control strategies can be successfully avoided. As well as highly dynamic performances inheriting from the predictive characteristics, enhanced steady-state torque control performances can be guaranteed under different operating conditions. Although the extended control set is utilized to augment the control freedom and further reduce torque ripple, the control effect of the proposed algorithm does not rely on the increase of switching frequency. Compared with the traditional predictive control strategies based on either finite control set or an extended control set, a superior control effect can be obtained while keeping a low switching frequency. Moreover, duty cycle signals are directly obtained in the prediction process, and no additional space vector pulsewidth modulation method is needed. Experimental validations and comprehensive comparison are conducted to demonstrate the effectiveness of the proposed strategy.

中文翻译：

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基于磁通轨迹优化的永磁同步电机预测磁通控制

本文提出了一种基于磁通轨迹优化的永磁同步电机预测磁通控制策略。不是在每个采样周期结束时最小化瞬时通量跟踪误差，而是在成本函数中考虑了不同控制集对整个采样间隔内通量轨迹的影响。结果，可以抑制稳态转矩和磁通脉动。此外，可以成功避免传统预测控制策略中发现的不准确扇区确定。除了继承自预测特性的高动态性能外，还可以在不同的工况下保证增强的稳态扭矩控制性能。尽管利用扩展控制集来增加控制自由度并进一步降低转矩脉动，但所提出算法的控制效果并不依赖于开关频率的增加。与传统的基于有限控制集或扩展控制集的预测控制策略相比，在保持较低的开关频率的同时，可以获得更好的控制效果。而且，在预测过程中直接获得占空比信号，不需要额外的空间矢量脉宽调制方法。进行了实验验证和综合比较，以证明所提出策略的有效性。与传统的基于有限控制集或扩展控制集的预测控制策略相比，在保持较低的开关频率的同时，可以获得更好的控制效果。而且，在预测过程中直接获得占空比信号，不需要额外的空间矢量脉宽调制方法。进行了实验验证和综合比较，以证明所提出策略的有效性。与传统的基于有限控制集或扩展控制集的预测控制策略相比，在保持较低的开关频率的同时，可以获得更好的控制效果。而且，在预测过程中直接获得占空比信号，不需要额外的空间矢量脉宽调制方法。进行了实验验证和综合比较，以证明所提出策略的有效性。