基于矢量控制的永磁交流伺服系统运行性能分析

Analysis on Operating Performance of Permanent Magnet AC Servo System Based on Vector Control

永磁同步电机矢量控制系统在很多场合得到了应用,但由于矢量控制技术依托于永磁同步电机的数学模型,其系统性能受电机参数影响较大。研究利用SIMULINK搭建基于矢量控制的电流、转速双闭环矢量控制系统,采用Id=0磁场定向矢量控制理论分析电机的电参数和机械参数对永磁同步电机调速控制系统性能的影响。在不同给定转速、不同参数下对电机运行性能的影响进行了仿真分析。仿真结果表明:定子电阻突加对电机运行性能影响不明显,机械参数的突加会使电机动态性能变差,转速波形的上升时间明显变长,电参数对电机动态性能影响较小。该研究为后续电机参数辨识和补偿研究提供了基础。

Permanent magnet synchronous motor vector control system has been applied in many situations.However,as vector control technology relies on the mathematical model of permanent magnet synchronous motor,its system performance is greatly influenced by motor parameters.This paper uses SIMULINK to establish current and revolving speed double closed-loop vector control system based on vector control,uses Id=0magnetic field oriented vector control theory to analyze the influence of electrical parameters and mechanical parameters of motor on speed control system performance of PMSM and conducts simulation analysis on the influence of different given revolving speeds and parameters on the operating performance of motor.The simulation result shows that sudden increase of stator resistance does not have significant influence on the operating performance of motor,sudden increase of mechanical parameters impairs the dynamic performance of motor,the rise time of revolving speed waveform becomes obviously longer and electrical parameters have little influence on dynamic performance of motor.This research provides foundation for subsequent motor parameter identification and compensation researches.