摘要
针对永磁同步电机在传统双矢量模型预测转矩控制中存在计算量庞大、转矩波动明显和参数不匹配导致的预测误差等问题,提出一种基于新型拓展滑模扰动观测器的改进双矢量模型预测转矩控制策略。首先,为了减少控制计算量,提出一种快速电压矢量选择表,采用12扇区电压矢量图,使迭代次数从14次减少为3次。然后,针对电机参数失配带来的不良影响,通过预测值和实际测量值在相邻时刻的误差变化量来估算定子电感值,整合电感更新机制,并提出一种新型拓展滑模观测器,以增强预测模型在参数失配情况下的鲁棒性。MATLAB/Simulink仿真结果表明,所提出的策略可以减少转矩波动,有效降低参数变化带来的不利影响,并提高预测模型的稳定性。
Aiming at the problems of large computation,obvious torque fluctuation,and prediction error due to parameter mismatch in traditional dual-vector model predictive torque control for permanent magnet synchronous motor,an improved dual-vector model predictive torque control strategy based on novel extended sliding-mode disturbance observer is proposed.Firstly,in order to reduce the control computation,a fast voltage vector selection tableis proposed with a graph of 12 sector voltage vector,the number of iterations is greatly reduced from 14 to 3.Then,to address the undesirable effects of motor parameter mismatch,the stator inductance value is estimated by the amount of error variation between the predicted and actual measured values at adjacent moments,the inductance updating mechanism is integrated,and a novel extended sliding-mode observer is proposed to enhance the robustness of the prediction model in the case of parameter mismatch.The MATLAB/Simulink simulation results show that the proposed strategy can reduce the rotor torque volatility,effectively reduce the unfavorable influence of the parameters change,and improve the stability of the prediction model.
作者
李小宝
柳骏涛
周维龙
梁登辉
龙欢
赵哲
罗朝旭
LI Xiaobao;LIU Juntao;ZHOU Weilong;LIANG Denghui;LONG Huan;ZHAO Zhe;LUO Zhaoxu(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China;College of Railway Transportation,Hunan University of Technology,Zhuzhou 412007,China)
出处
《湖南电力》
2025年第1期121-129,共9页
Hunan Electric Power
基金
湖南省教育厅优秀青年项目(22B0563)。
关键词
永磁同步电机
模型预测转矩控制
拓展滑模观测器
参数失配
permanent magnet synchronous motor(PMSM)
model predictive torque control
extended sliding-mode observer
parameter mismatch
