The model predictive flux control (MPFC) strategy is an improved method for the weighting factor that is difficult to adjust in the traditional model predictive torque control (MPTC). By analyzing the relationship among torque, stator flux and load angle, the simultaneous control of torque and stator flux amplitude is converted into the control of equivalent references stator flux vector, which eliminates directly the weighting factor. However, MPFC also suffers from high torque and flux ripples if only one voltage vector is applied during each control period. In order to solve this problem, a three-vector-based model predictive flux control strategy is proposed for permanent magnet synchronous motor in this paper. Three voltage vectors are applied in one control cycle to achieve good control performance of torque and flux, and the durations of three vectors are determined based on the principle of stator flux deadbeat control. The experimental results show that, compared with the model predictive flux control strategy and the optimal duty model predictive flux control strategy, the three-vector-based model predictive flux control strategy can effectively reduce the torque and flux ripples, improve the system's steady-state performance.

模型预测磁通控制（MPFC）策略是针对传统模型预测转矩控制（MPTC）中难以调整的权重因子的改进方法。通过分析转矩、定子磁链和负载角之间的关系，将转矩和定子磁链幅值的同时控制转化为等效参考定子磁链矢量的控制，直接消除了加权因子。然而，如果在每个控制周期只施加一个电压矢量，MPFC 也会受到高转矩和磁通脉动的影响。针对这一问题，本文提出了一种基于三矢量模型的永磁同步电机预测磁通控制策略。在一个控制周期内施加三个电压矢量，以获得良好的转矩和磁通控制性能，根据定子磁链无差拍控制原理确定三个矢量的持续时间。实验结果表明，与模型预测磁通控制策略和最优占空比模型预测磁通控制策略相比，基于三向量的模型预测磁通控制策略能够有效降低转矩和磁通脉动，提高系统的稳态。表现。