基于转速和母线电压的PMSM电流环自适应控制方法  

Adaptive Control Method of PMSM Current Loop Based on Speed and Bus Voltage

作　　者：杨庭杰 马小龙 王鑫 杨世明 YANG Tingjie;MA Xiaolong;WANG Xin;YANG Shiming(Yinchuan Weili Transmission Technology Co.,Ltd.,YinChuan 750000,Ningxia,China)

机构地区：[1]银川威力传动技术股份有限公司,宁夏银川750000

出　　处：《电气传动自动化》2023年第5期5-11,共7页Electric Drive Automation

基　　金：宁夏回族自治区重点研发项目(2021BEE02031)。

摘　　要：永磁同步电机(PMSM)电流环解耦控制主要取决于电机参数辨识的精度,而精确的电机参数则是实现高精度、高性能电机矢量控制的重要基础。不完全解耦会造成电机在高转速区电流调节的动态性能变差,电流环出现超调与严重震荡,并且母线电压的纹波也会造成电流环调整时间变长,动态跟踪精度变差及电机扭矩抖动等问题。目前,此状态已很难满足现阶段对PMSM控制系统的快速性、抗干扰性及鲁棒性等高性能的要求。针对上述情况,文中提出一种不依赖被控对象精确数学模型的自适应模糊PI控制器,用于解决电流环不完全解耦下高转速对电流环影响带来的动态响应性能变差、电流环震荡等问题,并以补偿的形式解决母线电压纹波对电流环产生的影响。结合模糊PI控制和母线电压纹波补偿算法提出的这种自适应的电流环控制方法可以有效减小工况变化对电流环性能的影响。经过仿真和实验验证,并与经典PI控制作比较分析,提出的自适应电流环控制方法可以综合考虑并缓解工程实际中高转速和母线电压纹波对电流环带来的影响,该方法具有更好的快速响应和动态跟踪效果,有效改善了电流环的动态性能。The current loop decoupling control of permanent magnet synchronous motor(PMSM)mainly depends on the accuracy of motor parameter identification,and accurate motor parameters are the important basis for achieving high-precision and high-performance motor vector control.Incomplete decoupling will lead to poor dynamic performance of current regulation of the motor in the high speed region,overshoot and serious vibration of the current loop,and the ripple of the bus voltage will also lead to longer adjustment time of the current loop,poor dynamic tracking accuracy and motor torque jitter.At present,this state is difficult to meet the requirements of high performance of PMSM control system,such as rapidity,anti-interference and robustness.In view of the above situation,this paper proposes an adaptive fuzzy PI controller that does not rely on the precise mathematical model of the controlled object,which is used to solve the problems of poor dynamic response performance and current loop oscillation caused by the influence of high speed on the current loop under the incomplete decoupling of the current loop,and to solve the influence of bus voltage ripple on the current loop in the form of compensation.This adaptive current loop control method combined with fuzzy PI control and bus voltage ripple compensation algorithm can effectively reduce the impact of operating conditions on current loop performance.After simulation and experimental verification,and compared with the classical PI control,the proposed adaptive current loop control method can comprehensively consider and mitigate the impact of high speed and bus voltage ripple on the current loop in engineering practice.This method has better rapid response,dynamic tracking effect,and effectively improves the dynamic performance of the current loop.

关 键 词：永磁同步电机 电流环 模糊控制 转速 母线电压 

分 类 号：TM351[电气工程—电机]