Improved sliding mode sensorless control of permanent magnet synchronous motor

被引：0

作者：

Kang E.-L. ^{[1
]}

Chen J. ^{[1
]}

机构：

[1] School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin

来源：

Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2022年 / 26卷 / 10期

关键词：

approach law; no position sensor control; permanent magnet synchronous motor; sliding mode controller; super-twisting sliding mode observer; torque observer;

D O I：

10.15938/j.emc.2022.10.011

中图分类号：

学科分类号：

摘要：

For the problem that the traditional sliding mode observer has large estimation error when the sensorless control method of permanent magnet synchronous motor is used in moderate and high speeds, a changeable gain super-twisting sliding mode observer is proposed. The gain of this observer changed with the estimated speed. On the premise of ensuring the stability, this observer was aimed to enhance the estimation precision of speed and rotor position on the basis of the super-twisting algorithm. To address the issue of poor robustness in sensorless control system, a sliding mode speed controller based on a fresh approach law and a load torque observer was proposed to increase the dynamic response and robustness of the whole control system. The stability of the proposed approach law and load torque observer was demonstrated in terms of Lyapunov stability theory. Simulations and experiments prove that the modified sliding mode sensorless control system can enhance the accuracy of speed estimation and the robustness of the control system. © 2022 Editorial Department of Electric Machines and Control. All rights reserved.

引用

页码：88 / 97

页数：9

共 18 条

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