基于双矢量的永磁同步电机模型预测电流控制  

Two-vector-based model predictive current control of permanent magnet synchronous motor

作　　者：涂震 赵阳[2] 余佳佳 李凌 TU Zhen;ZHAO Yang;YU Jiajia;LI Ling(Jiayu County Power Supply Company,State Grid Hubei Electric Power Co.,Ltd.Jiayu 437200,China;School of Electrical and Electronic Engineering,Hubei University of Technology,Wuhan 430068,China)

机构地区：[1]国网湖北省电力有限公司嘉鱼县供电公司,湖北嘉鱼437200 [2]湖北工业大学电气与电子工程学院,湖北武汉430068

出　　处：《武汉大学学报（工学版）》2020年第8期721-727,共7页Engineering Journal of Wuhan University

摘　　要：针对传统的永磁同步电机模型预测电流控制,采用枚举法在1个控制周期内只选择1个最优电压矢量作用,使得电流跟踪控制存在过调节或欠调节的问题,提出一种基于双矢量的模型预测电流控制算法。该方法将6个有效工作电压矢量形成的平面划分为6个新扇区,每个新扇区包含1个有效电压矢量,再将每个新扇区分为3个子区。通过判断给定电压矢量所在的区域,选择下一时刻作用的最优第1、第2电压矢量,再根据最小化价值函数的原则,计算出所选2个电压矢量分别的作用时间。该方法在1个控制周期内作用2个电压矢量。最后,通过搭建模型仿真研究验证了所提方法的有效性。Traditional model predictive current control of permanent magnet synchronous motor(PMSM)selects only one optimal voltage vector in a control period by using enumeration method,which makes the current tracking control overregulated or underregulated.A predictive current control algorithm based on twovector model is proposed.This method divides the plane of six active voltage vectors into six new sectors.Each new sector contains an active voltage vector,and each new sector is divided into three sub-regions.According to judgement of the region where the given voltage vector is located,the first and second optimal voltage vectors for the next step are selected,and then the action time of each voltage vector selected is calculated based on the principle of the minimum cost function.The two voltage vectors operate successively in a control period.At last,the simulation results verify that the proposed control method is effective by modeling.

关 键 词：永磁同步电机 模型预测电流控制 双矢量 价值函数最小化 

分 类 号：TM341[电气工程—电机]