基于PMSM模型解耦的电流控制器设计与性能研究  

Study of Current Controller Performance and Design Based on PMSM Model Decoupling

作　　者：郭宇[1] 艾永乐[1] 王泰华[1] 牛联波[1] 

机构地区：[1]河南理工大学,河南焦作454000

出　　处：《微特电机》2009年第12期53-55,共3页Small & Special Electrical Machines

基　　金：河南省国际合作科研基金(0646660006);河南理工大学博士基金(648207)

摘　　要：永磁同步电动机(PMSM)是一个多变量、非线性、强耦合的控制对象,即使在同步坐标系下对电机的磁场电流和转矩电流进行解耦,也无法实现d轴、q轴电压直接控制d轴、q轴电流。提出了电机本体解耦方案,即通过在电机中添加控制模块,把速度电压和互感项去掉,将交、直轴分量的控制转化成两个独立通道的控制系统;其次,设计了一种电流控制器,并将其应用于PMSM的电流控制中。仿真结果表明,该电流控制器具有较好的鲁棒性和动态响应性能。The permanent magnet synchronous motor （PMSM） is a controlled object featured with multi-variables, nonlinearity and strong coupling. The fact that d-axis current can be directly controlled by d-axis voltage,the same as the q -axis current,can not be realized even if the field current and torque current have been deeoupled in the synchronous coor- dinates. A decoupling method for the electrical model was presented,meaning that the speed voltage and mutual inductance voltage were subtracted in the machine model proposed. Therefore, the control of d and q axis components was changed to single-loop independent control system. Then a current controller was designed and applied to the current control of PMSM. Simulation results show that it is of high performance of dynamic and robustness.

关 键 词：电机模型 解耦 电流控制器 

分 类 号：TM341[电气工程—电机]