PMSM无位置传感器矢量控制速度调节器参数选定  

Parameters Design of the Speed Regulator for PMSM Sensorless Vector Control

作　　者：伍嘉伟 李海春 尹泉 WU Jiawei;LI Haichun;YIN Quan(Automation Institute,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China)

机构地区：[1]华中科技大学自动化学院,湖北武汉430074

出　　处：《电气传动》2018年第8期3-9,共7页Electric Drive

基　　金：国家自然科学基金(61374049);中央高校基本科研业务费专项资金(2017KFYXJJ174)

摘　　要：针对无位置传感器算法在速度估算时的滞后导致系统稳定裕度变小的问题,提出一种输入为实际转速、输出为估算转速的等效模型来替代估算模块用以构建等效估算速度闭环矢量控制系统。基于该等效系统求出速度调节器参数的稳定范围,合理选定可以使系统稳定运行的参数。采用一种基于永磁同步电机(PMSM)的扩展反电动势模型的全阶滑模观测器来估算电机的位置与速度信息,通过这种估算算法验证提出方法的可行性。仿真和物理实验结果验证了所提出的估算速度闭环等效方法的有效性。To solve the problem which the stability margin becomes smaller because of the hysteresis of the sensorless algorithm in the speed estimation,an equivalent model was proposed which input was the actual speed and output was the estimate speed to replace the estimation module for constructing the equivalent estimated speed closed loop vector control system.The stability range of the speed regulator parameters could be found out based on this equivalent system,and then the parameters which could make the system stable operation was obtained.A full-order sliding mode observer based on the extended back electromotive force model of permanent magnet synchronous motor(PMSM)was used for rotor position and speed estimation,this algorithm was used to verify the feasibility of the proposed method.The simulation and experimental results verify the effectiveness of the proposed method.

关 键 词：永磁同步电机 扩展反电动势 稳定裕度 无位置传感器矢量控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]