基于弱磁升速的永磁同步电机模型预测控制  

Model Predictive Control Strategy for Permanent Magnet Synchronous Motor Based on Flux-Weakening Speed Rise

作　　者：余雨婷 滕青芳[1] 柏建勇[2] 韩思远[1] 

机构地区：[1]兰州交通大学,兰州730070 [2]济南铁路局青岛电务段,青岛266000

出　　处：《微特电机》2016年第12期44-47,共4页Small & Special Electrical Machines

基　　金：国家自然科学基金项目(61463025);人社部2015留学人员科技活动择优资助项目

摘　　要：针对永磁同步电机在弱磁过程中容易产生转矩脉动的问题,在弱磁控制的基础上设计了有限集模型预测控制.有限集模型预测(Finite Control Set Model Predictive Torque Control,FCS-MPC)控制算法的实现需要利用整流器有限开关的状态特点,和电机的数学模型来预测系统的未来状态.同时,构造系统的目标函数,采用遍历法,在线进行寻优选出系统的最优开关状态.最后将目标函数选择的最优开关信号作为控制信号,以使系统稳定性更好.仿真和实验结果表明,所提出的控制策略使永磁同步电机的转矩脉动小、鲁棒性更好。For permanent magnet synchronous motor in the process of flux weakening prone to the problem of torque ripple, finite set of model predictive control method is designed on the basis of flux weakening control. Finite set of model predictive control algorithm＂ realization need to use the limited switch rectifier characteristics, and motor mathematical mod- el to predict the future state of the system. At the same time, set up the target function, using traversing method to optimize the best switch state of the system. In the end , use the best switch state selected by target function as control signal , so that the system stability is better . Simulation and experimental resuhs show that the proposed control strategy reduces torque ripple of permanent magnet synchronous motor and provides better robustness.

关 键 词：面贴式永磁同步电机 弱磁控制 恒磁链控制 有限集模型预测控制 稳定性 

分 类 号：TM341[电气工程—电机] TM351