永磁同步电机改进占空比模型预测转矩控制方法  

Improved Duty Cycle Model Predictive Torque Control Method of Permanent Magnet Synchronous Motor

作　　者：徐艳平[1] 周钦[1] 雷亚洲 张保程 李园园[1] XU Yanping;ZHOU Qin;LEI Yazhou;ZHANG Baocheng;LI Yuanyuan(Department of Electrical Engineering,Xi’an University of Technology,Xi’an 710048,Shaanxi,China;Hitachi Yonge Electric Equipmen(t Xi’an)Co.,Ltd.,Xi’an 710016,Shaanxi,China)

机构地区：[1]西安理工大学电气工程系,陕西西安710048 [2]日立永济电气设备(西安)有限公司,陕西西安710016

出　　处：《电气传动》2017年第5期14-17,44,共5页Electric Drive

摘　　要：针对永磁同步电机(PMSM)传统模型预测转矩控制(MPTC)存在转矩和磁链脉动较大的问题,提出了一种对占空比和电压矢量同时优化的模型预测转矩控制方法。该方法针对每一种电压矢量预先计算出使得下一时刻转矩和磁链误差最小的占空比,再通过价值函数同时选取出电压矢量和占空比的组合,并且在占空比计算过程中考虑了对转矩和磁链脉动的同时抑制。实验结果表明,所提出的控制方法能够较好地抑制转矩和磁链脉动。To solve the problem of larage torque and flux linkage ripples in traditional model predictive torque control(MPTC)for permanent magnet synchronous motor(PMSM),an improved duty cycle MPTC method was proposed which selected voltage and duty cycle simultaneously.In this method,each voltage vector′s duty cycle was calculated which made errors of torque and flux linkage minimum at the next sampling instant,and then the optimal combination of the voltage vector and its duty cycle would be selected by a cost function,and torque and flux linkage were considered simultaneously in the process of calculating duty cycle.Experimental results show that the proposed method can effectively reduce torque and flux linkage ripples.

关 键 词：永磁同步电机(PMSM) 模型预测转矩控制(MPTC) 占空比控制 转矩脉动 

分 类 号：TM351[电气工程—电机]