基于永磁同步电机单步预测转矩控制的优化研究

由于传统直接转矩控制采用滞环控制器,因此不可避免导致较大转矩脉动,本文使用基于评估函数的永磁同步电机模型预测直接转矩控制,对转矩环使用预测算法代替滞环控制。首先建立模型预测控制系统模型,阐述具体实施流程并优化预测算法,最后:与直接转矩控制进行仿真比较,结果表明,所提出的优化模型预测直接转矩控制相较于传统直接转矩控制,更有效地抑制转矩脉动,且保留传统直接转矩控制的良好鲁棒性,并使计算量较模型预测转矩控制有显著降低,仿真验证了该方法的可行性和有效性。

Research on Direct Torque Control of Permanent Magnet Synchronous Machines Based on MPC

Because the traditional direct torque control uses a hysteresis controller,it will inevitably lead to large torque ripples.In this paper,a predictive algorithm is used instead of the hysteresis control for the torque loop and make improvements.First,a predictive control system model is established,the specific implementation process is optimized,and the prediction algorithm is optimized.At the same time,simulation comparison with direct torque control is performed.The results show that Compared with traditional direct torque control,it reduces the torque ripple more effectively and retains the good robustness of traditional direct torque control.And the proposed optimization model predicts that the direct torque control calculation amount is significantly greater than the model predictive torque control.Simulation proves the feasibility and effectiveness of the method.