Journal of Green Energy Research and Innovation
Quarterly

Robust Control of Load Voltage in an Islanded Wind Energy Conversion System Using Nonlinear Methods

Document Type : Research article

Authors

Adel Sotoudeh 1
Mohammad Mahdi Rezaei 1
Mohammadreza Moradian 2

1 Department of Electrical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, Isfahan, Iran.

2 Department of Electrical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Isfahan, Iran.

https://doi.org/10.61186/jgeri.1.4.17
Abstract
Renewable wind energy is a significant source of green energy supply that has gained considerable attention and development in numerous countries in recent years. These systems are utilized as islanded units in circumstances where it is not feasible to establish a connection to the network. Various structures exist for these systems, but the focus of many studies has been on wind energy conversion systems based on a squirrel cage induction machine with back-to-back converters. When operating in islanded mode, this structure necessitates specific control requirements, with the most crucial being the supplying of the desired voltage and frequency of the load. In this paper, two control structures are proposed and constructed to regulate the load voltage by controlling the load-side converter. Two control loops have been implemented in the first control structure. The inner loop utilizes the state feedback input-output method to control the voltage, while the outer loop employs the sliding mode method to control the power components. The objective is to derive the control law for the reference biaxial voltage of the load-side converter. The second proposed structure incorporates the voltage controller sliding mode control method in the inner loop and then the state feedback input-output method is employed in the outer loop to control the current components of the load-side converter, thus designing the system control input. The simulation results of both structures in MATLAB software have been compared by introducing various disturbances to assess the control systems' resilience to each other and the common proportional-integral linear control structure. In the suggested method, voltage and current variations manifest concurrently in the control structure predicated on power components.

Graphical Abstract

Robust Control of Load Voltage in an Islanded Wind Energy Conversion System Using Nonlinear Methods

Highlights

  • Using input-output controller and sliding mode simultaneously
  • Load side voltage control using voltage converter
  • Two-stage control of squirrel cage induction generator (SCIG)

Keywords

Wind Energy
Induction generator
Nonlinear control
Feedback linearization
Sliding mode control

 

Declaration of Competing Interest

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The ethical issues, including plagiarism, informed consent, misconduct, data fabrication and/or falsification, double publication and/or submission, redundancy, have been completely observed by the authors.

 

Credit Authorship Contribution Statement

Adel Sotoudeh: Conceptualization, Data curation, Formal analysis, Investigation, Roles/Writing - original draft, Writing-review & editing. Mohammad Mahdi Rezaei: Methodology, Project administration, Writing-review & editing. Mohammadreza Moradian: Methodology, Validation, Visualization, Roles/Writing-original draft, Writing-review & editing.

 

Bibliography

 Adel Sotoudeh was born in Iran in 1989. He received his Ph.D. degree in Electrical Engineering (Power system) from Khomeinishahr Branch, Islamic Azad University, Khomeinishahr /Isfahan, Iran, in 2023. Also, he has taught for ten years at Khorasgan Islamic Azad University and sama college. He has published 4 research papers. His research interests include power quality, smart grids, design, optimization and implementation of electrical drives, and microgrids.

 Mohammad Mahdi Rezaei received the M.Sc. degree in electrical engineering from Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran, in 2007, and the Ph.D. degree in electrical engineering from the Science and Research Branch, Islamic Azad University, Tehran, Iran, in 2015.  He is currently an Associated Professor in the Department of Electrical and Computer Engineering, Khomeinishahr Branch, Islamic Azad University, Isfahan, Iran.  His main areas of research are control of microgrids, distributed generations, and design, optimization and implementation of electrical drives.

 Mohammadreza Moradian received the M.Sc. degree in electrical engineering from Isfahan University of Technology, Isfahan, Iran, in 2001, and the Ph.D. degree in electrical engineering from the Science and Research Branch, Islamic Azad University, Tehran, Iran, in 2016.  He is currently an Associated Professor in the Department of Electrical and Computer Engineering, Najafabad Branch, Islamic Azad University, Isfahan, Iran.  His main areas of research are electrical machines and drives, distributed generations, and design, power system reliability.

Citation

A. Sotoudeh, M. M. Rezaei, and M. Moradian, "Robust Control of Load Voltage in an Islanded Wind Energy Conversion System Using Nonlinear Methods," Journal of Green Energy Research and Innovation, vol. 1, no. 4, pp. 17-34, 2024.

 

 

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Journal of Green Energy Research and Innovation
Volume 1, Issue 4
Autumn 2024
Pages 17-34

  • Receive Date 26 April 2024
  • Revise Date 13 May 2024
  • Accept Date 21 May 2024
  • Publish Date 01 December 2024

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