一种基于新型滑模趋近律的异步电机调速方法  

An Asynchronous Motor Speed Regulation Method Based on a New Sliding Mode Reaching Law

作　　者：张蕊 夏岩 黄桂平 陈仁钊 杨屹立 ZHANG Rui;XIAYan;HUANG Guiping;CHEN Renzhao;YANG Yili(School of Automation and Information Engineering,Sichuan University of Science&Engineering,Zigong 643000,Sichuan,China;Zonergy,Zigong 643000,Sichuan,China)

机构地区：[1]四川轻化工大学自动化与信息工程学院,四川自贡643000 [2]兴储世纪科技股份有限公司,四川自贡643000

出　　处：《电气传动》2025年第3期13-20,共8页Electric Drive

基　　金：智能电网四川省重点实验室(2022-IEPGKLSP-KFYB05);四川省科技计划资助(2022SZYZF01)。

摘　　要：针对异步电机在传统滑模控制下的鲁棒性差和系统抖振问题,提出一种控制系数根据滑模面位置而动态变化的变系数幂指趋近律(VCPERL),并基于该趋近律设计滑模控制器。首先,考虑快速幂次趋近律(QPRL)和双幂次趋近律(DPRL)在滑模面不同位置趋近速率不同的优点,利用双曲正切函数tanh(x)替换符号函数sign(x),并在趋近律中引入变系数项,提出VCPERL。其次,根据理论分析和仿真,证明新型趋近律的稳定性。最后,根据转子磁链定向矢量控制理论和异步电机的动态数学模型,应用VCPERL设计滑模控制器。仿真结果表明,与传统PI控制、QPRL和DPRL相比,VCPERL对负载扰动具有强抗扰能力和快速恢复能力,可有效提高系统的动态响应性能。Aiming at the poor robustness and system vibration problem of asynchronous motors under the traditional sliding mode control,a variability coefficient power exponent reaching law(VCPERL)was proposed to dynamically change the control coefficients according to the position of the sliding mode surface,and the sliding mode controller was designed based on this reaching law.Firstly,according to the advantages of quick-power reaching law(QPRL)and the double-power reaching law(DPRL),which have different reaching rates at different positions of the sliding mode surface,meanwhile,the tanh(x)was used to replace the sign(x),and a variable coefficient was introduced into the reaching law.Secondly,the stability of the new reaching law was proved based on theoretical analysis and simulation.Finally,the VCPERL was applied to design the sliding mode controller according to the theory of vector control oriented by rotor magnetic chain and the dynamic mathematical model of asynchronous motor.The simulation results show that compared with the traditional PI control,QPRL and DPRL,VCPERL has strong immunity to load disturbances and fast recovery capability,which can effectively improve the dynamic response performance of the system.

关 键 词：异步电机 新型趋近律 滑模控制器 收敛速度 抗扰性能 动态响应 

分 类 号：TM343[电气工程—电机]