基于自抗扰控制的永磁同步电机弱磁控制策略  

Flux Weakening Control Strategy of Permanent Magnet Synchronous Motor Based on Active Disturbance Rejection Control

作　　者：李思毅 苏健勇[1] 杨贵杰[1] Li Siyi;Su Jianyong;Yang Guijie(School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin,150001,China)

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001

出　　处：《电工技术学报》2022年第23期6135-6144,共10页Transactions of China Electrotechnical Society

摘　　要：针对应用纯积分器的电压反馈弱磁控制在弱磁程度较深时会发生振荡乃至失控的问题,提出一种基于自抗扰控制的电压反馈弱磁控制方法。通过建立电压环小信号时域模型,设计了自抗扰电压控制器,给出控制器参数的选取原则并利用描述函数法对稳定性进行分析。该方法不依赖被控对象精确模型,鲁棒性强,可有效观测并补偿系统中存在的非线性及其他扰动因素,有效处理线性与非线性控制对象。实验证明,与纯积分器方法相比该文所提方法在弱磁深度较深时带载能力更强,稳定性更好。In this paper,a voltage feedback flux weakening control method based on active disturbance rejection control(ADRC)is proposed to solve the problem that the voltage feedback flux weakening control using pure integrator will oscillate or even lose control when the flux weakening degree is deep.By establishing the small signal time domain model of the voltage loop,the active disturbance rejection voltage controller is designed,the selection principle of the controller parameters is given,and the stability is analyzed by using the describing function method.This method does not rely on the accurate model of the controlled object,and has strong robustness.It can effectively observe and compensate the nonlinear and other disturbance factors in the system,and effectively deal with linear and nonlinear control objects.The experimental results show that compared with the pure integrator method,the proposed method has stronger load capacity and better stability when the flux weakening depth is deeper.

关 键 词：永磁同步电机 弱磁控制 自抗扰控制 描述函数法 

分 类 号：TM341[电气工程—电机]