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首页> 外文期刊>Industry Applications, IEEE Transactions on >Sensorless Control of Permanent Magnet Synchronous Machine Based on Second-Order Sliding-Mode Observer With Online Resistance Estimation
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Sensorless Control of Permanent Magnet Synchronous Machine Based on Second-Order Sliding-Mode Observer With Online Resistance Estimation

机译：基于在线电阻估计的二阶滑模观测器的永磁同步电机无传感器控制

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摘要

In this paper, a supertwisting algorithm based second-order sliding-mode observer (STA-SMO) with online stator resistance (Rs) estimation for sensorless control of a nonsalient permanent magnet synchronous machine is proposed. A stator current observer is designed based on an STA to estimate the back electromotive force. A discontinuous sign function in the conventional SMO is replaced by a supertwisting function. The chattering problem, unavoidable in conventional SMO, is eliminated by reducing the amplitude of switching function of an STA-SMO. Meanwhile, a parallel online Rs estimation scheme is presented based on a modified SMO. Because mismatch between actual and set resistance may lead to estimation error and even system instability. The Lyapunov stability theorem is used to obtain the stable conditions of the proposed online Rs observer at both motoring and generating mode. With the help of online Rs observer, resistance uncertainties caused by temperature variation can be taken into account, which means robustness and stability of an STA-SMO can be improved. At the same time, higher position and speed estimation accuracy is obtained and operation range of sensorless control is extended. Finally, the proposed method is validated and compared with a conventional method by simulations and experiments.
机译：本文提出了一种基于超扭曲算法的二阶滑模观测器（STA-SMO），其具有在线定子电阻（Rs）估计，用于无凸极永磁同步电机的无传感器控制。基于STA设计定子电流观测器，以估计反电动势。常规SMO中的不连续符号功能由超扭曲功能代替。通过减小STA-SMO的切换功能的幅度，消除了常规SMO中不可避免的颤动问题。同时，提出了一种基于改进的SMO的并行在线Rs估计方案。因为实际电阻和设置电阻之间的不匹配可能导致估计误差，甚至导致系统不稳定。 Lyapunov稳定性定理用于在电动和发电模式下获得拟议的在线Rs观测器的稳定条件。借助在线Rs观测器，可以考虑温度变化引起的电阻不确定性，这意味着可以提高STA-SMO的鲁棒性和稳定性。同时，获得了更高的位置和速度估计精度，并扩大了无传感器控制的操作范围。最后，通过仿真和实验验证了该方法的有效性，并与常规方法进行了比较。

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  • 来源
    《Industry Applications, IEEE Transactions on》 |2017年第4期|3672-3682|共11页
  • 作者

    Donglai Liang; Jian Li; Ronghai Qu;

  • 作者单位

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, China;

    State Key Laboratory of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sensorless control; Observers; Resistance; Rotors; Estimation error; Stators;

    机译：无传感器控制;观测器;电阻;转子;估计误差;定子;

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