改进的永磁同步电机双矢量模型预测转矩控制

针对永磁同步电机（PMSM）传统模型预测转矩控制（MPTC）权重系数设置复杂、转矩和磁通脉动大的问题，提出了一种改进的PMSM双矢量MPTC方法。该方法扩展虚拟矢量以增加候选电压矢量，结合电压矢量作用于转矩和磁链的原则，减少选择候选矢量的计算量。同时，针对转矩无差拍和磁通无差拍，运用候选矢量的转矩占空比和磁通占空比构造了优化规则代替传统预测转矩控制中的代价函数，避免权重系数的整定问题。仿真结果表明，所提改进方法不仅提高稳态性能，而且能保持MPTC动态响应迅速的特点。

Improved Dual-Vector Model Predictive Torque Control of Permanent Magnet Synchronous Motor

The setting of weight coefficients of permanent magnet synchronous motor (PMSM) traditional model predictive torque control (MPTC) is cumbersome, and torque and magnetic flux pulsations are large. In order to solve these problems, an improved dual-vector MPTC method of PMSM is proposed. The method expands the virtual vector to increase the candidate voltage vector, and the principle that the voltage vector acts on the torque and flux linkage is used to reduce the calculation amount of selecting the candidate vector. For torque deadbeat and magnetic flux deadbeat, optimization rules are constructed by using the torque duty cycle and flux duty cycle of the candidate vector to replace the cost function in the traditional predictive torque control, avoiding the problem of setting weight coefficients. The simulation results show that the proposed method not only improves the steady state performance, but also maintains the rapid dynamic response of MPTC.