基于MRAS的永磁同步电机无位置传感器控制策略研究  

Research on Permanent Magnet Synchronous Motor Position Sensorless Control Strategy Based on MRAS

作　　者：时维国 刘坤亮 SHI Weiguo;LIU Kunliang(School of Electronics and Information Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学电气信息工程学院

出　　处：《电机与控制应用》2019年第7期39-44,共6页Electric machines & control application

基　　金：辽宁省自然科学基金重点项目(20170540141)

摘　　要：针对机械式传感器的使用会增加调速系统成本、故障率等问题,基于模型参考自适应系统(MRAS)设计了永磁同步电机(PMSM)无位置传感器矢量控制系统。推导了MRAS算法获取PMSM矢量调速系统转速与位置过程,给出了系统的自适应律选择,并证明了该系统满足Popov超稳定性条件,保证了系统渐进稳定。最后通过MATLAB/Simulink仿真软件搭建了仿真模型,仿真结果表明所设计的无位置传感器调速系统在负载突变以及转速动态变化等工况下具有良好的控制性能。The use of mechanical sensors would increase the cost and failure rate of the speed control system.The permanent magnet synchronous motor(PMSM)position sensorless vector control system was designed based on model reference adaptive system(MRAS).The MRAS algorithm was used to obtain the speed and position of the PMSM vector speed control system.Appropriate adaptive law was selected for the system.The system was proved to satisfy the Popov hyperstability condition,ensuring the asymptotic stability of the system.Finally,simulation model was built by using MATLAB/Simulink.The simulation results showed that the designed position sensorless speed control system had good control performance under the conditions of sudden load change and dynamic speed change.

关 键 词：永磁同步电机 模型参考自适应系统 矢量控制 无位置传感器 

分 类 号：TM351[电气工程—电机]