摘要
当永磁同步电机(PMSM)采用一拍时延的模型预测电流控制方法时,虽然避免了传统比例积分控制复杂的参数整定,但其性能容易受到PMSM参数失配的影响,以及其他一些未建模的动态都会影响预测控制的性能。因此,提出了一种基于参考自适应的PMSM模型预测控制方法,能够准确辨识电机参数并且提高控制系统的稳定性。由于电压矢量和逆变器的作用延迟造成的控制性能减弱,通过加入一拍时延实现两步电流预测控制。通过对电流预测模型进行稳定性分析,建立d-q轴电流预测误差方程,从理论分析电机参数对于d-q轴电流预测误差的影响,采用模型参考自适应算法对电机电感和磁链参数进行辨识。通过仿真验证了该方法的可行性,能够在准确辨识出电机参数的前提下提高模型预测电流控制的性能。
When the model predictive current control method with one-step time delay is used for permanent magnet synchronous motor(PMSM),the complex parameters setting of the conventional PI can be avoided,the parameters mismatch of PMSMs and other un-modeled dynamics could affect the performance of the predictive control.Therefore,a PMSM model predictive control method based on refe-rence adaptiion was proposed,which can accurately recognize motor parameters and improve the stabi-lity of the control system.Due to degradation of control performance caused by the delay of voltage vector and inverter,a two-step current prediction control was realized by adding a one-step delay.By analyzing the stability of the current prediction model,the d-q-axis current prediction error equation was established,the influence of the motor parameters on the d-q-axis current prediction error was analyzed,and the model-referenced adaptive algorithm was used to identify the motor inductance and flux parameters.Finally,the feasibility of the method was verified by simulation,which can improve the performance of model prediction current control under the premise of accurately identifying the motor parameters.
作者
张永真
潘军
江腾耀
齐志强
杨定木
沈凯
ZHANG Yongzhen;PAN Jun;JIANG Tengyao;QI Zhiqiang;YANG Dingmu;SHEN Kai(Northwest Instiute of Mechanical&Electrical Engineering,Xianyang 712099,Shaanxi,China)
出处
《火炮发射与控制学报》
北大核心
2025年第3期89-97,共9页
Journal of Gun Launch & Control
关键词
永磁同步电机
自适应
模型预测控制
稳定性分析
参数辨识
permanent magnet synchronous motor
adaptive
model predictive control
stability analysis
parameters identification
