基于LMI的永磁同步电动机定子磁链观测研究  

Research on stator flux observer of permanent magnet synchronous motor via LMI approach

作　　者：虞嫣然 韩如成[1] 闫庚龙 赵昊广 

机构地区：[1]太原科技大学电子信息工程学院,山西太原030024

出　　处：《电气传动自动化》2017年第3期9-12,共4页Electric Drive Automation

摘　　要：为了提高永磁同步电动机直接转矩控制系统在定子电阻值变化时定子磁链的观测性能,提出了一种改进自适应定子磁链观测器的设计方法,该方法采用线性矩阵不等式迭代算法代替传统极点配置方法来获取增益矩阵。仿真结果表明,改进的方法可以提高定子电阻的辨识精度,改善定子电阻变化时定子磁链的观测性能。In order to improve the performance of the stator flux observer of the direct torque control system of the permanent magnet synchronous motor when the stator resistance changes,an improved design method for the stator flux observer is proposed. The method adopts the linear matrix inequality iterative approach to replace the pole placement method to obtain the gain matrix. The simulation results show that this new method can improve the accuracy of the stator resistance identification when it changes,also can improve the performance of the stator flux observer.

关 键 词：永磁同步电动机 直接转矩控制 定子磁链观测器 定子电阻辨识 

分 类 号：TM301[电气工程—电机]