基于电流闭环的PMSM无速度传感器控制  

Sensorless Control of PMSM Based on Current Closed-loop Observer

作　　者：丁稀慧 苏建徽[1,2] 赖纪东[1,2] 施永[1,2] DING Xi-hui;SU Jian-hu;LAI Ji-dong;SHI Yong(Hefei University of Technology,Research Center for Photovoltaic System Engineering of Ministry of Education,Heifei 230009,China)

机构地区：[1]合肥工业大学教育部光伏系统工程研究中心,安徽合肥230009 [2]合肥工业大学可再生能源与工业节能安徽省工程实验室,安徽合肥230009

出　　处：《电力电子技术》2019年第7期33-35,56,共4页Power Electronics

基　　金：合肥工业大学项目(45000-411104/012)~~

摘　　要：在永磁同步电机(PMSM)的无速度传感器控制中,速度与角度估算的准确性将直接影响控制性能。状态观测器具有结构简单、噪音少的特点。在此提出一种基于矢量控制的电流闭环观测器PMSM无速度传感器方案,该方案依据PMSM在静止坐标系下的数学模型,从同步电机的电磁转矩与角速度的关系出发,结合控制理论,实现对速度和角度的估算。仿真和实验验证结果表明所提方案能准确地估测到转子的位置和速度,且具有良好的动、静态运行性能。For sensorless control of the permanent magnet synchronous motor(PMSM),the estimated accuracy of the angular velocity and position angle will directly affect control performance.As state observer has the advantages of simple structure and low noise,a novel sensorless control method on the basis of the current closed-loop state observer is proposed.The method is based on mathematic deducing of relationship between the electromagnetic torque and the angular velocity in accordance with the PMSM's mathematic model and the control theory.A system simulation model and experimental platform are set up,simulation and experimental results verify the effectiveness and validity of the proposed sensorless control method,and the observer can work well in dynamic response process.

关 键 词：永磁同步电机 无速度传感器控制 电流闭环观测器 

分 类 号：TM351[电气工程—电机]