基于备选矢量优化的永磁同步电机系统快速预测位置控制  

Fast Predictive Position Control of Permanent Magnet Synchronous Motor System Based on Alternative Vector Optimization

作　　者：林顺[1] 衣得武 王志强[2] LIN Shun;YI Dewu;WANG Zhiqiang(Bei Fang Investigation,Design&Research Co.,LTD.,Tianjin 300222,China;School of Automobile and Transportation,Tianjin University of Technology and Education,Tianjin 300222,China)

机构地区：[1]中水北方勘测设计研究有限责任公司,天津300222 [2]天津职业技术师范大学汽车与交通学院,天津300222

出　　处：《微电机》2023年第12期25-30,共6页Micromotors

摘　　要：针对永磁同步电机系统位置预测控制的传统价值函数中位置、转速、电流权重系数难以调整,且存在遍历法下控制电压矢量选择计算效率低的问题,提出一种基于备选矢量优化的有限控制集快速预测位置控制策略。首先预测带有电流、转速和位置信息的参考电压矢量,之后转化价值函数到电压量纲以省去权重系数,并将最大电流、转速限制项统一到电压量纲来实现对电流和转速的限制;之后通过求取参考电压矢量的位置进行备选矢量的优化选择,将备选电压矢量个数由8个缩减到3个,减少计算次数。最后,通过实验研究证明所提出的控制策略具有较好的动态响应速度和运动控制精度,且无需权重系数调整、计算次数节省约45%。Aimed at the problem that it is difficult to adjust the weight coefficients of position,speed and current in the traditional cost function of the position predictive control for permanent magnet synchronous motor system,and the problem of low calculation efficiency of control voltage vector selection under the ergodic method.This paper proposed a finite control set fast position predictive control strategy based on alternative vector optimization.First,the reference voltage vector with current,speed and position was predicted,and then the cost function was converted to the voltage dimension to leave out the weight coefficient,and the maximum current,speed limit was unified to the voltage dimension to realize the current and speed limit.At the same time,the optimization selection of the candidate vector was carried out according to calculating the position of the reference voltage vector to reduce the number of candidate voltage vectors from 8 to 3,reducing the number of calculations.Finally,the experimental study proves that the proposed control strategy has better dynamic response speed and motion control accuracy,at the same time,there is no need to adjust the weight coefficient,and the computation times are saved by about 45%.

关 键 词：有限控制集快速预测位置控制 位置控制 永磁同步电机 权重系数 

分 类 号：TM351[电气工程—电机] TM341[自动化与计算机技术—检测技术与自动化装置] TP273[自动化与计算机技术—控制科学与工程]