摘要
针对传统矢量控制方式永磁同步电机(permanent magnet synchronous motor,PMSM)存在的低速时启动电流及转速超调量过大等问题,本文利用指数趋近率,设计了一种基于滑模变结构的矢量控制策略。首先利用矢量控制(field oriented control,FOC)方式进行分析,结合选取的矢量控制方式进行滑模趋近率的选取,并采用Matlab/Simulink软件对永磁同步电机及所提出的控制策略进行建模,对所设计的永磁同步电机控制系统进行仿真分析。仿真结果表明,在所设计的滑模矢量控制模式下,加速过程中,系统会出现小幅度的超调,但能在0.05s内使电机达到指定转速;负载转矩抗干扰能力较强,稳态性能良好;电流控制效果良好,且在允许范围内逐步减弱至平衡态。本文设计的滑模控制具有良好的转速控制性能。该研究为后期实物验证提供了理论支持。
Aiming at a series of problems of the permanent magnet synchronous motor(PMSM)of the traditional vector control method at low speed,such as excessive starting current and excessive speed overshoot,this paper uses an exponential approach to design a slip-based Vector control strategy for modal structure.Firstly,the vector control(field oriented control,FOC)method is analyzed,and the sliding mode approach rate is selected based on the selected vector control method.The permanent magnet synchronous motor and the proposed control strategy are modeled with Matlab/Simulink.The designed permanent magnet synchronous motor control system is simulated and analyzed.The simulation results show that under the designed sliding mode vector control mode,during the acceleration process,the system will have a small overshoot,but the motor can reach the specified speed within 0.05 s;the load torque has a strong anti-interference ability.The steady-state performance is good;the current control effect is good,and it gradually decreases to the equilibrium state within the allowable range.It shows that the designed sliding mode control has good speed control performance.This research provides theoretical support for later physical verification.
作者
徐晓通
华青松
张洪信
邱瑞林
XU Xiaotong;HUA Qingsong;ZHANG Hongxin;QIU Ruilin(School of Electromechanic Engineering,Qingdao University,Qingdao 266071,China)
出处
《青岛大学学报（工程技术版）》
CAS
2020年第2期69-74,共6页
Journal of Qingdao University(Engineering & Technology Edition)
关键词
永磁同步电机
趋近率
滑模控制
矢量控制
permanent magnet synchronous motor
approaching rate
sliding mode control
vector control
