摘要
永磁同步电机无差拍预测电流控制具有动态响应快、稳态性能好和易于数字实现的特点。但是,当电机参数不匹配时,传统无差拍预测电流控制存在电流稳态误差大的问题。为此,本文提出了一种永磁同步电机自适应无差拍预测电流控制方法,降低了不匹配参数对电流控制性能的影响。首先,所提方法将电阻、电感和磁链的参数摄动统一视为扰动,并结合自适应控制设计了一种dq轴扰动自适应律。在此基础上,通过扰动自适应律对扰动进行在线估计并在传统无差拍预测电流控制器中进行扰动补偿,有效降低了不匹配参数对传统无差拍预测电流控制的不利影响。其次,通过离散李雅普诺夫稳定性理论对所提控制方法进行了稳定性证明,并采用经典控制理论确定了扰动自适应增益的取值。最后,仿真与实验结果表明,所设计的扰动自适应律能够快速、准确的估计扰动;与传统无差拍预测电流控制相比,所提控制方法有效抑制了不匹配参数对电流动态性能和稳态误差的影响,降低了电流的总谐波失真。
The deadbeat predictive current control for permanent magnet synchronous motor features fast dynamic response,excellent steady-state performance,and easy digital implementation.However,traditional deadbeat predictive current control exhibits significant steady-state current errors when motor parameters are mismatched.Therefore,this paper proposes an adaptive deadbeat predictive current control method for permanent magnet synchronous motor,which reduces the impact of parameter mismatches on current control performance.Firstly,the proposed method uniformly treats resistance,inductance,and flux linkage parameter perturbations as disturbances and designs adaptive disturbance laws for the dq-axis by incorporating adaptive control.On the basis,the disturbance is estimated online through the disturbance adaptive law,and disturbance compensation is carried out in the traditional deadbeat predictive current controller.This approach effectively reduces the adverse effects of mismatched parameters on the traditional deadbeat predictive current control.Secondly,the stability of the proposed control method was proven using discrete Lyapunov stability theory,and the values of the disturbance adaptive gains were determined through classical control theory.Finally,simulation and experimental results demonstrate that the designed disturbance adaptive law can rapidly and accurately estimate disturbances.Compared with traditional deadbeat predictive current control,the proposed method effectively suppresses the impact of mismatched parameters on current dynamic performance and steady-state error,while reducing the total harmonic distortion of the current.
作者
郭盛坤
侯波
Guo Shengkun;Hou Bo(School of Electrical Engineering,Shaanxi University of Technology,Hanzhong 723001,China)
出处
《电子测量技术》
北大核心
2026年第1期133-145,共13页
Electronic Measurement Technology
基金
山西省自然科学基金面上项目(202203021211201)
陕西理工大学研究生创新基金(SLGYCX2540)项目资助。
关键词
永磁同步电机
无差拍预测电流控制
扰动自适应
参数不匹配
permanent magnet synchronous motor
deadbeat predictive current control
disturbance adaptation
parameter mismatch
