Torque Ripple Minimization of Predictive Torque Control for PMSM With Extended Control Set
Torque Ripple Minimization of Predictive Torque Control for PMSM With Extended Control Set
复制标题
具有扩展控制集的 PMSM 预测扭矩控制的扭矩纹波最小化
DOI：
10.1109/tie.2017.2686320
复制
发表时间：
2017-09-01
影响因子：
7.7
通讯作者：
Shi, Tingna
中科院分区：
文献类型：
--
作者：
Zhou, Zhanqing;Xia, Changliang;Shi, Tingna
针对永磁同步电机预测转矩控制（PTC）系统稳态转矩脉动问题，提出了一种基于扩展控制集的改进PTC算法（ECS-PTC）。该算法将更多的候选电压矢量扩展到控制集中，形成ECS，从而提高了转矩控制精度，减小了转矩脉动。更吸引人的是，在ECS-PTC中设计了一种新的电压矢量合成方法，并在此基础上建立了相应的预测模型和级联预测算法。借助它们，可以在较短的控制周期内从ECS中选出最优矢量，同时对其幅值进行优化，实现对转矩和磁链的高精度控制效果。此外，输出矢量的三相占空比可以在ECS-PTC中直接确定，而无需空间矢量脉宽调制。实验结果表明，ECS-PTC具有良好的动态转矩性能，同时具有更稳定的转矩控制性能和更好的执行效率。
To reduce the steady-state torque ripples for permanent-magnet synchronous motor drives with predictive torque control (PTC), this paper proposes a modified PTC algorithm based on the extended control set (ECS-PTC). In the proposed algorithm, more candidate voltage vectors are extended to the control set, which forms the ECS, and then, the torque control precision could be improved and the torque ripples will be reduced. More attractive thing is that a new voltage vector synthesis method is deigned in ECS-PTC, and the corresponding predictive model and cascaded predictive algorithm are set up on the basis of this method. With the help of them, the optimal vector can be selected from ECS in a shorter control period of time, and its amplitude is also optimized at the same time to achieve high-precision control effects for torque and flux. In addition, the three-phase duty ratios of the output vector can be determined in ECS-PTC directly, without the help of space vector pulse width modulation. The experimental results show that ECS-PTC has excellent dynamic torque performance, and it also has more stable torque control performance and better execution efficiency at the same time.