永磁同步电机的自耦PID直接转矩控制方法  

Research on auto-coupling PID direct torque control strategy of permanent magnet synchronous motor

作　　者：张国林 曾喆昭[1,2] 唐钰淇 ZHANG Guolin;ZENG Zhezhao;TANG Yuqi(College of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410114,China;Hunan ZhezhaoAutomation Control Technology Co.,Ltd.,Changsha 410000,China)

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410114 [2]湖南喆昭自动化控制技术有限公司,长沙410000

出　　处：《兵器装备工程学报》2025年第3期189-194,共6页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(61040049);湖南省教育厅重点项目(21A0183);长沙理工大学研究生科研创新项目(CSLGCX23060)。

摘　　要：针对永磁同步电机直接转矩控制存在转矩和磁链脉动大、鲁棒性差等问题,根据自耦PID控制理论提出了自耦PI新型直接转矩控制方法。该方法分别将转速环、磁链环以及转矩环的已知或未知内部动态、外界扰动与模型的不确定性等一切复杂因素定义为3个总扰动,并在转速控制环节引入虚拟控制量来获得q轴虚拟转矩指令,进而将PMSM控制系统等价映射为线性扰动系统,构建了在总扰动激励下的受控误差系统,据此设计了基于速度因子的自耦PI控制器。仿真实验结果表明了自耦PI控制方法具有响应速度快、无超调、无振荡的动态品质与控制精度高、抗干扰能力强的稳态性能。Aiming at the problems of high torque and flux ripple,poor robustness,and other issues in direct torque control of permanent magnet synchronous motors,a new type of Auto-coupling PI direct torque control method is proposed based on the theory of Auto-coupling PID control.This method defines all complex factors such as known or unknown internal dynamics,external disturbances,and model uncertainty of the speed loop,flux loop,and torque loop as three total disturbances,and introduces virtual control variables in the speed control loop to obtain the q-axis virtual torque command.Furthermore,the PMSM control system is equivalently mapped to a linear disturbance system,constructing a controlled error system under total disturbance excitation.Based on this,an Auto-coupling PI controller based on speed factor was designed.The simulation experimental results show that the Auto-coupling PI control method has fast response speed,no overshoot,no oscillation dynamic quality,high control accuracy,and strong anti-interference steady-state performance.

关 键 词：永磁同步电机 直接转矩控制 自耦PID 速度因子 抗扰动鲁棒性 

分 类 号：TJ811[兵器科学与技术—武器系统与运用工程] TP273[自动化与计算机技术—检测技术与自动化装置]