永磁同步电机单电流调节器弱磁控制策略优化  

Optimization of Single Current Regulator Flux-weakening Control Strategy for Permanent Magnet Synchronous Motor

作　　者：石讯 易映萍 石伟 SHI Xun;YI Ying-ping;SHI Wei(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China;XJ Group Corporation,Xuchang 461000,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]许继集团有限公司,河南许昌461000

出　　处：《控制工程》2021年第2期327-334,共8页Control Engineering of China

基　　金：国家重点研发计划项目资助(2018YFB0106300)。

摘　　要：针对电压角度法单电流调节器弱磁控制策略带来的内环稳定性下降问题,采用小信号模型法推导了使用该控制策略时电机的传递函数,证明了控制系统本质上是一个非最小相位系统。针对使用该控制策略时内置式电机参数特性导致的开环极点接近虚轴的问题,提出采用PD控制器前馈补偿策略。针对电机弱磁控制过程中极点改变导致传统PID控制器参数整定不合理的问题,基于内模控制原理,提出采用变参数PID控制器的弱磁控制策略。仿真与实验结果表明,所提出的方法可以有效提高使用电压角度法单电流调节器弱磁控制策略时电流内环的稳定性。Aiming at the problem of decreased stability of the inner loop caused by the voltage angle method single current regulator flux-weakening control strategy,the small signal model method is used to derive the transfer function of the motor when the control strategy is used,which proves that the control system is essentially a non-minimum phase system.Aiming at the problem that the open-loop pole is close to the virtual axis caused by the interior motor parameter characteristics when using this control strategy,a PD controller feedforward compensation strategy is proposed.Aiming at the problem that the parameter setting of the traditional PID controller is unreasonable due to the pole change in the motor flux-weakening control process,based on the principle of internal model control,a flux-weakening control strategy using variable parameter PID controller is proposed.Simulation and experimental results show that the proposed method can effectively improve the stability of the current inner loop when the voltage angle method is used for single current regulator flux-weakening control strategy.

关 键 词：永磁同步电机 单电流调节器弱磁控制策略 电压角度法 非最小相位系统 变参数PID控制 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]