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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:

21

期数:

2017年06

页码:

10-17

栏目:

出版日期:

2017-06-01

文章信息/Info

Title:

Study on improved sliding-mode control with resistance estimation of PMSM

作者:

?张勇军1;  汪伟1;  张小庆1;  肖雄1;  尚敬2

?( 1． 北京科技大学工程技术研究院，北京100083; 2． 中车株洲电力机车研究所有限公司，湖南株洲412001)

Author(s):

ZHANG Yong-jun1;  WANG Wei1;  ZHANG Xiao-qing1;  XIAO Xiong1;  SHANG Jing2

( 1． Institute of Engineer Technology，University of Science and Technology Beijing， Beijing 100083，China; 2． CRRC Zhuzhou Institute Co． ，LTD． ，Zhuzhou 412001，China)

关键词:

永磁同步电机;  滑模观测器;  Sigmoid 函数;  电阻在线辨识

Keywords:

permanent magnet synchronous motors;  sliding mode observer;  sigmoid function;  stator resistance identification

分类号:

TM 351

DOI:

10.15938/j.emc.2017.06.002

文献标志码:

A

摘要:

针对永磁同步电机定子电阻的不确定性及传统滑模观测存在的固有抖振问题，提出一种带电阻在线辨识的无速度传感器改进型滑模观测方法。该方法在传统滑模观测器的基础上，采用可变边界层厚度的Sigmoid 函数来取代Sign 函数，并结合转速大小动态调整观测器增益; 同时引入电
阻在线辨识环节，运用李雅普诺夫函数设计了电阻参数在线辨识算法，并用于实时修正滑模观测器参数。仿真和实验结果表明，与传统的滑模观测器相比，该算法能够有效地抑制滑模观测器的抖振现象，转速估计对电阻变化的鲁棒性得到增强，提高了永磁同步电机驱动系统在整个调速范围内的观测精度。

Abstract:

The stator resistance uncertainty and the inherent chattering of the traditional sliding mode observer exist in permanent magnet synchronous motor ( PMSM) sensorless variable frequency speed control system． An improved sliding mode observer with online stator resistance identification was designed to optimize the performance of PMSM drive system． Based on the principle of the conventional sliding mode observer， a sensorless control strategy that substitutes a Sigmoid function for the Sign function with a variable
boundary layer was proposed，which can dynamically adjust the observer gain according to the speed． In order to eliminate the effect of the uncertainty of the stator resistance on speed estimation and improve the accuracy of sliding mode observer，the algorithm identified stator resistance online which can help update the parameters of sliding mode observer by using the Lyapunov function． The results of simulations and experiments show that，compared with the traditional sliding mode，the proposed algorithm can suppressthe chattering problem，enhance the robustness of speed estimation in the effect of the uncertainty of the
stator resistance and thus estimate PMSM drive system with high accuracy．

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期: 2014 － 11 － 28
基金项目: 国家科技支撑计划项目( 2012BAF09B02)
作者简介: 张勇军( 1973—) ，男，博士，副研究员，研究方向为新型控制系统理论、交流调速控制理论与电力电子应用等领域;
汪伟( 1994—) ，男，硕士研究生，研究方向为直驱式永磁同步发电机及其控制;
张小庆( 1989—) ，男，硕士研究生，研究方向为永磁同步电机及其控制;
肖雄( 1989—) ，男，博士研究生，研究方向为新型控制系统理论、电力电子技术与非线性控制;
尚敬( 1977—) ，男，博士，高级工程师，研究方向为大功率变流系统与交流传动控制技术。

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更新日期/Last Update: 2017-08-24