永磁同步电机磁阻转矩的有效利用及其预测控制系统

摘要

To increase the power factor and to raise the maximum admissible torque,we exploit the reluctance torque of permanentmagnet synchro nous motor(PMSM)which salinency ratio is higher than one.Internal model control( IMC)is applied to PMSM current control,which improves systems performance and make controller expressed directly in an adjustable parameter,this simplifies th e design procedure.Synthesizing the advantages of model algorithmic control(MAC) in prediction,optimization and feedback online real time,MAC is applied to PMS M speed control,which only need low precision model,and system is of better perf ormance and stronger robustness.The simulation and experimental results verify t he proposed control scheme,and show that PMSM predictive control system is of th e best dynamics and statics.%对于ρ＞1的PMSM，有效地利用磁阻转矩实现最大转矩/电 流控制，改善了外功率因数，提高了电机出力，将IMC应用于PMSM电流环控制，极大地改善 了系统性能，且控制器只有一个可调参数，使设计过程简化。综合MAC在线实时预测、优化 、反馈校正的优点，将MAC应用于PMSM的速度控制，系统算法简易，性能优良，鲁棒性强， 对PMSM模型的精度要求很低，允许模型有较大失配。仿真和实验结果表明，PMSM预测控制系 统具有优良的动态、静态特性。