International Journal of

ADVANCED AND APPLIED SCIENCES

EISSN: 2313-3724, Print ISSN: 2313-626X

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 Volume 9, Issue 9 (September 2022), Pages: 53-60

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 Original Research Paper

 Flexible control of grid-connected renewable energy systems inverters under unbalanced grid faults

 Author(s): Bassam Alhamazani 1, Rabeh Abbassi 1, *, Hani Aloufi 1, Badr Alshammari 1, Houssem Jerbi 2, Saleh Albadran 1

 Affiliation(s):

 1Department of Electrical Engineering, College of Engineering, University of Ha’il, Ha’il, Saudi Arabia
 2Department of Industrial Engineering, College of Engineering, University of Ha’il, Ha’il, Saudi Arabia

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 * Corresponding Author. 

  Corresponding author's ORCID profile: https://orcid.org/0000-0001-8257-6721

 Digital Object Identifier: 

 https://doi.org/10.21833/ijaas.2022.09.007

 Abstract:

The sustainable energy opportunity of the future lies in the renewable energy-based distributed Power Generation systems (DPGSs). However, there are different concerns and integration issues that surround them. To increase the rate at which renewable energy can be used, this paper focuses on an integrated utility grid system. A novel strategy to control the grid side inverter is developed for a DPGS when considering an unbalanced grid. First, an analysis of the consequences of the occurrence of a fault on the grid is performed. Secondly, a control strategy is proposed to ensure the operation of the DPGS connected to the grid even if the latter is unbalanced. The proposed approach consists in developing control loops for each of the three symmetrical sequences in a specific reference frame to ensure the operation of the grid-connected DPGS even during asymmetrical grid voltage fault. The found results are promising in terms of the guarantee of service continuity during faulty conditions.

 © 2022 The Authors. Published by IASE.

 This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

 Keywords: Three phase unbalanced grid, Symmetrical sequences, Inverter, Power quality

 Article History: Received 20 February 2022, Received in revised form 21 May 2022, Accepted 6 June 2022

 Acknowledgment 

This research has been funded by Scientific Research Deanship at the University of Ha’il–Saudi Arabia through project number GR-22 079.

 Compliance with ethical standards

 Conflict of interest: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.

 Citation:

 Alhamazani B, Abbassi R, and Aloufi H et al. (2022). Flexible control of grid-connected renewable energy systems inverters under unbalanced grid faults. International Journal of Advanced and Applied Sciences, 9(9): 53-60

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 Figures

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 Tables

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