面向异步电机模型预测直接转矩控制的自适应谐波消除方法  

Adaptive Harmonic Elimination for Model Predictive Direct Torque Control of Asynchronous Motor

作　　者：韩硕 张勇军[1,2] 肖雄 刘辰伟[1] 郭强 Han Shuo;Zhang Yongjun;Xiao Xiong;Liu Chenwei;Guo Qiang(National Engineering Research Center for Advanced Rolling and Intelligent Manufacturing University of Science and Technology Beijing,Beijing 102206 China;Institute of Engineering Technology University of Science and Technology Beijing,Beijing 102206 China)

机构地区：[1]北京科技大学高效轧制与智能制造国家工程研究中心,北京102206 [2]北京科技大学工程技术研究院,北京102206

出　　处：《电工技术学报》2025年第4期1078-1089,共12页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金资助项目(U21A20483)。

摘　　要：异步电机变频驱动系统在运行过程中会产生大量谐波,引发电机转矩脉动、损耗加重等问题,给电机性能及效率带来直接影响,因此有针对性地控制或消除驱动系统的谐波具有重要的研究意义。该文创新性地提出一种带有自适应谐波消除策略的模型预测直接转矩控制(AHE-MPDTC)方法,首次将自适应谐波消除策略引入到模型预测直接转矩控制中,通过调整自适应滤波器的权重,从目标函数得到的主输入信号中消除不期望出现的频率分量,从而获得较为理想的变换器输入参考电压。测试结果表明,所提出的方法在保证系统响应速度的基础上,可以有效消除由于变换器引起的5~25次谐波,从而提升异步电机调速系统的稳定性。With the rapid development of the economy and society,three-phase induction motors are widely used in aerospace,steel,electric power,and various industrial sectors due to their simple design,reliable performance,and cost-effectiveness.However,the operation of the asynchronous motor frequency drive system can generate harmonics,causing issues such as torque pulsation in generators,increased losses,and other challenges.These factors directly impact the efficiency and performance of the motor,sometimes resulting in failures in production processes or electromechanical systems.This paper proposes a model predictive direct torque control(AHE-MPDTC)method with an adaptive harmonic elimination strategy to ensure the system response speed based on the effective elimination of the 5th to 25th harmonics.Firstly,a least mean square(LMS)adaptive algorithm is used to estimate the harmonic interference components while updating the weighting coefficients of cosine and sinusoidal signals online.Secondly,the adaptive algorithm is applied to the model predictive direct torque control(MPDTC)method to obtain the magnetic chain harmonic components and torque harmonic components to be filtered.Thirdly,multiple harmonics are eliminated by adding a single module,and the control system output is added to the output of the harmonic elimination module.All the harmonic voltage values that need to be eliminated are obtained and added to the system transfer function.Finally,the multiple AHE algorithm is embedded into the MPC,and the output current of the AC motor is transformed to obtain the MT axis.The sinusoidal and co-sinusoidal components of the frequencies that need to be eliminated are introduced into the MF_AHE and the 5th to 25th harmonic voltages The experimental results verify the AHE-MPDTC method and the following conclusions can be drawn.(1)The dead time compensation strategy of the asynchronous motor drive system,the current harmonic suppression method of the harmonic extractor,and the electromagnetic torque pulsation suppressio

关 键 词：异步电机 变频驱动 模型预测控制 自适应谐波消除 

分 类 号：TM343[电气工程—电机]