Journal of Green Energy Research and Innovation
Quarterly

Performance Analysis of a Three-Level Z-Source Inverter for Grid-Connected Photovoltaic Systems Using Model Predictive Control

Document Type : Research article

Authors

Ali Nahavandi
Mohammad Reza Azizi

Department of Electrical Engineering, Faculty of Engineering, Malayer University, Malayer, Iran.

https://doi.org/10.61186/jgeri.2.2.68
Abstract
In this paper, a single-stage three-level z-source inverter is utilized for connecting PV panels to the grid. The use of a three-level z-source inverter not only allows adjustment of output voltage but also facilitates the elimination of harmonic components. To extract maximum power from the PV panels, a model predictive control (MPC) strategy based on maximum power point tracking (MPPT) is employed. This method allows the MPC to predict the optimal operating point one step ahead, resulting in a faster response compared to conventional perturb and observe (P&O) method under rapid changes. Finally, the three-level z-source inverter is simulated using MATLAB/Simulink software, and its performance using the MPC method is analyzed. The simulation results have verified that the converter operates effectively.‎

Graphical Abstract

Performance Analysis of a Three-Level Z-Source Inverter for Grid-Connected Photovoltaic Systems Using Model Predictive Control

Highlights

 

❖ Presentation of a single-stage boost z-source neutral point clamped (Z-NPC) Inverter.
❖ Use of model predictive control (MPC) to control the proposed three-level inverter.
❖ Tracking the maximum point of power for photovoltaic panel (PV) using model predictive control

Keywords

Photovoltaic System
Three Level Z-Source Inverter
Model Predictive Control
Maximum Power Point Tracking (MPPT)

Declaration of competing interest
The author declare that he has 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 author.

 

Credit Authorship Contribution Statement

Ali Nahavandi: Conceptualization, Project administration, Supervision, Validation, Roles/Writing - original draft, Writing-review & editing. Mohammadreza Azizi: Conceptualization, Data curation, Formal analysis, Investigation, Resources, Software.

 

Bibliography

Ali Nahavandi was born in Malayer, Iran, in 1983. He received the B.Sc., M.Sc. and Ph.D. degrees in electrical power engineering from University of Tabriz, Tabriz, Iran, in 2006, 2008 and 2014 respectively. Since 2014 he is assistant professor in Faculty of Engineering, Malayer University, Malayer, Iran. His research interests include power electronic converters, renewable energy systems and power quality‎.

Mohammadreza Azizi received the B.Sc. degree in electrical engineering from the Shahid Madani University of Azerbaijan, Tabriz, Iran, and the M.Sc. degree in electrical engineering from Malayer University, Malayer, Iran. He acquired several years of experience as a Lecturer and a Research Assistant at Malayer University.‎

 

Citation

A. Nahavandi, and M. Azizi," Performance Analysis of a Three-Level Z-Source Inverter for Grid-Connected Photovoltaic Systems Using Model Predictive Control," Journal of Green Energy Research and Innovation, vol. 2, no. 5, pp. 69-79, 2025.

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Journal of Green Energy Research and Innovation
Volume 2, Issue 2
Spring 2025
Pages 68-78

  • Receive Date 03 March 2025
  • Revise Date 07 April 2025
  • Accept Date 09 April 2025
  • Publish Date 01 June 2025

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