Model predictive flux control of permanent magnet synchronous motor driven by three-level inverter based on fine-division strategy  

基于精细分区的的永磁同步电机三电平模型预测磁链控制

作　　者：MIAO Zhongcui LI Haiyuan HE Yangyang WANG Yunkun 缪仲翠;李海源;何阳阳;王运坤(兰州交通大学自动化与电气工程学院,甘肃兰州730070)

机构地区：[1]School of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China

出　　处：《Journal of Measurement Science and Instrumentation》2022年第4期439-450,共12页测试科学与仪器（英文版）

基　　金：National Natural Science Foundation of China(No.51867012)。

摘　　要：Aiming at the difficulty of setting the weight coefficient in the value function of model predictive torque control(MPTC)for permanent magnet synchronous motor(PMSM)driven by three-level inverter,a fine-division model predictive flux control(MPFC)method is proposed.First,establish a mathematical model between the motor torque and the stator flux linkage according to the mathematical equations of PMSM.Thus,the control of the motor torque and stator flux linkage in the MPTC is transformed into the control of a single stator flux linkage vector,omitting the cumbersome weight setting process in the traditional MPTC.The midpoint potential control strategy is proposed,which uses the characteristics of redundant small vectors to balance the midpoint potential.After that,a fine-division strategy is proposed,which effectively reduces the number of candidate vectors and the computational burden of the system.Finally,the proposed MPFC is compared with MPTC by simulation.The results show that the proposed fine-division MPFC effectively reduces the system calculation,and has the advantages of simple principle and better dynamic and steady-state control performance.The feasibility of the control strategy is verified.

关 键 词：permanent magnet synchronous motor(PMSM) three-level inverter model predictive flux control(MPFC) weight coefficient midpoint potential 

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