基于二阶广义积分器的永磁同步电机新型磁链观测方法  

Novel flux observation method for permanent magnet synchronous motor based onsecond-ordergeneralized integrator

作　　者：苏光靖[1] 李红梅[1] 李争 

机构地区：[1]合肥工业大学电气与自动化工程学院 [2]河北科技大学电气工程学院

出　　处：《电子测量与仪器学报》2018年第1期81-88,共8页Journal of Electronic Measurement and Instrumentation

基　　金：国家自然科学基金(51377041)资助项目

摘　　要：为改善永磁同步电机磁场定向控制和直接转矩控制系统的控制性能,准确观测定子磁链,解决传统电压模型观测中存在的问题,提出一种基于广义二阶积分器的新型定子磁链观测法。该方法在传统二阶广义积分器的基础上,引入直流偏置积分校正环节,能够消除电压模型定子磁链观测器的积分初值、积分漂移和直流偏置的影响。仿真和实验验证该方法的有效性。实验结果表明,与传统的广义二阶积分器相比,改进的方法能够更准确的估算定子的磁链。To observe accurately the stator flux of permanent magnet synchronous motor drive system,which is adopted by field orientationcontrol and direct torque control, a novel stator flux observation methodbased on second-order generalized integratoris presented. Compared with the traditional stator flux observer based on voltage model,this proposed method can overcome the influence of integral initial values and integral drift,also eliminate DC offset completely. The simulation and experimental results demonstrate the feasibility and effectiveness of the method proposedin this paper. Different from the traditional second-order generalized integrator,the novel method can observestator flux accurately.

关 键 词：永磁同步电机 直接转矩控制 二阶广义积分器 磁链观测器 

分 类 号：TM341[电气工程—电机]