Adaptive linear active disturbance rejection control method of PWM rectifier under pulse load

被引：0
|
作者：
Gao C.-X. [1 ]
Yan J.-B. [1 ]
Li X.-D. [1 ]
Shen Y.-S. [1 ]
Yuan Y. [1 ]
机构：
[1] School of Electric and Electronic Engineering, Harbin University of Science and Technology, Harbin
来源：
Dianji yu Kongzhi Xuebao/Electric Machines and Control | 2023年 / 27卷 / 01期
关键词：
adaptive control; dynamic response; harmonic suppression; linear active disturbance rejection control; pulse load; working condition switching;
D O I：
10.15938/j.emc.2023.01.006
中图分类号：
学科分类号：
摘要：
For the pulse load with complex multi-conditions switching, the traditional uncontrolled or PID full controlled rectifier transformation system can not solve the technical index contradiction between the output voltage response and the AC side current harmonic. Therefore, a control method of adaptive adjustment according to the change of working conditions was proposed. Relationship between the voltage stability speed, three-phase current harmonic and the controller parameters under multi-conditions switching of pulse load was analyzed, and the contradiction mechanism between the two technical indicators was obtained. Based on the mathematical model of three-phase PWM rectifier, a linear active disturbance rejection controller was constructed and its basic parameters were determined. According to the relationship of the equivalent cut-off frequency of linear active disturbance rejection control (LADRC) and the AC side current harmonics with the controller parameters, a 4-degree of freedom updating algorithm for the equivalent bandwidth parameters was designed to adjust it adaptively by the change of conditions. Simulation and experimental results show that the proposed adaptive LADRC can improve the voltage dynamic response speed of the pulse load rectifier while load conditions switching and reduce the three-phase current harmonics of the AC side under stable conditions, so as to achieve adaptive coordination between the two indicators. © 2023 Editorial Department of Electric Machines and Control. All rights reserved.
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页码：55 / 64
页数：9
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