A high robust control scheme of grid-side converter for DFIG system

IF 2.2 4区计算机科学 Q2 AUTOMATION & CONTROL SYSTEMS

IET Control Theory and Applications Pub Date : 2024-10-29 DOI:10.1049/cth2.12755

Shuqi Shi, Zongze Liu, Long Ren, Hongwei Tang, Dongran Song

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Abstract

In this study, a high robust control—second-order sliding-mode control (SOSMC) scheme is proposed to improve the DC-link voltage dynamic performance of the grid-side converter (GSC) for the doubly-fed induction generator (DFIG) system under the wind turbine power disturbance and DC-link capacitance parameter disturbance. In general, the wind speed is change with the environment and further has an effect on the power generation of the DFIG system. Besides, the capacitance of DC-link capacitor may change with the working condition. To address this issue, a SOSMC scheme is proposed to replace the conventional proportional integral (PI) control for the DC-link voltage controller of the GSC for the DFIG system in this study. By using the non-linear SOSMC controller, the DFIG system is robust to the disturbance of the wind speed and the parameter of DC-link capacitance. Compared with the conventional PI control scheme, the DFIG system with the proposed SOSMC scheme is much more robust, which has been verified in the MATLAB/Simulink platform.

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DFIG 系统电网侧变流器的高鲁棒性控制方案

本研究提出了一种高鲁棒性控制--二阶滑模控制（SOSMC）方案，以改善双馈感应发电机（DFIG）系统在风力涡轮机功率扰动和直流链路电容参数扰动下的电网侧变流器（GSC）直流链路电压动态性能。一般来说，风速会随着环境的变化而变化，并进一步影响双馈异步发电机系统的发电量。此外，直流链路电容器的电容也会随着工作条件的变化而变化。针对这一问题，本研究提出了一种 SOSMC 方案来取代传统的比例积分（PI）控制，用于 DFIG 系统 GSC 的直流链路电压控制器。通过使用非线性 SOSMC 控制器，DFIG 系统对风速和直流链路电容参数的干扰具有鲁棒性。与传统的 PI 控制方案相比，采用 SOSMC 方案的 DFIG 系统更加稳健，这一点已在 MATLAB/Simulink 平台上得到验证。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IET Control Theory and Applications 工程技术-工程：电子与电气

CiteScore

5.70

自引率

7.70%

发文量

167

审稿时长

5.1 months

期刊介绍： IET Control Theory & Applications is devoted to control systems in the broadest sense, covering new theoretical results and the applications of new and established control methods. Among the topics of interest are system modelling, identification and simulation, the analysis and design of control systems (including computer-aided design), and practical implementation. The scope encompasses technological, economic, physiological (biomedical) and other systems, including man-machine interfaces. Most of the papers published deal with original work from industrial and government laboratories and universities, but subject reviews and tutorial expositions of current methods are welcomed. Correspondence discussing published papers is also welcomed. Applications papers need not necessarily involve new theory. Papers which describe new realisations of established methods, or control techniques applied in a novel situation, or practical studies which compare various designs, would be of interest. Of particular value are theoretical papers which discuss the applicability of new work or applications which engender new theoretical applications.