Two-Level Grid-Side Converter-Based STATCOM and Shunt Active Power Filter of Variable-Speed DFIG Wind Turbine-Based WECS Using SVM for Terminal Voltage

Abstract

Regulation of the terminal voltage of doubly fed induction generator (DFIG)-based wind energy conversion system (WECS) by modifying the control scheme of the grid side converter (GSC) is necessary compared to connecting alone flexible AC transmission systems (FACTS) and active power filter devices from economic point of view. An assessment study of GSC control strategy based both of static synchronous compensator (STATCOM) and shunt active power filter (SAPF) is introduced in this paper. STATCOM based AC voltage magnitude regulator and SAPF-based load calculations are controlled using space vector modulation (SVM) technique to maintain the terminal voltage of DFIG wind turbine constant when a grid disturbance happened. The system under study is modeled in MATLAB/Simulink environment. The simulation results under wind speed variation demonstrated that GSC-based STATCOM gives better results in regulation of the terminal voltage of DFIG compared to GSC-based SAPF and enhancement of the stability of this system.

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“…The control system occupies a very important position in the modern industrial production process (Daraz et al, 2022(Daraz et al, , 2021Ibraheem et al, 2020a,b;Abdul-Adheem et al, 2020a,b;Soliman et al, 2020;Gorripotu et al, 2021Gorripotu et al, , 2019Meghni et al, 2017Meghni et al, , 2018. In actual production, a production process may have thousands of control loops working together, and these loops contain various types of controllers (Mahdi et al, 2022;Sain et al, 2022;Fekik et al, 2022aFekik et al, ,b, 2021aFekik et al, ,b,c,d, 2020aAli et al, 2022Ali et al, , 2021aAcharyulu et al, 2021;Ajel et al, 2021). In the actual production process, the control system can be put into use in early often show the good performance, but after running for a period of time, because of the production equipment wear and tear, regular maintenance and maintenance is not timely, and the causes of system failure and so on, may make the control system of the performance degradation, therefore control performance assessment is very important.…”

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“…Then automatic control technology was developed with this mission, being used to ensure the smooth and safe operation for industrial process or maximum corporate benefit. Generally, at present, automatic control technology has been widely used in electric power, oil refining, paper making chemical industry, energy and other industrial production fields (Mahdi et al, 2022;Sain et al, 2022;Fekik et al, 2022aFekik et al, ,b, 2021aFekik et al, ,b,c,d, 2020aAli et al, 2022Ali et al, , 2021aAcharyulu et al, 2021;Ajel et al, 2021). More specifically to obtain the qualified productions during the industrial production, some key process variables are usually required to meet certain performance index.…”