Operation and Control of a Quasi Z-source Converter in a Renewable Hybrid Microgrid

Paul N. Timo, Tamer F. Megahed, Masahito Shoyama, Sobhy M. Abdelkader

Research output: Contribution to journalArticlepeer-review

Abstract

The power sharing need and operational reliability of a renewable hybrid microgrid are addressed in this study. A hybrid microgrid allows for the flexible incorporation of renewable energy sources, overcoming the limitations of AC and DC microgrids in terms of conversion losses and efficiency. To ensure optimal system performance, an interlinking converter (IC) is necessary for the seamless transmission of electric power between the two subgrids while keeping a stable DC bus voltage and appropriate AC sub-grid frequency. In this study, a Quasi Zsource converter (qZSC) with integrated boost capability is introduced as an IC in a PV-Wind based hybrid microgrid. Also, an adaptive dual loop based-PI (ADL-PI) control is proposed which maintains a constant peak DC-link voltage and supports maximum power point tracking while improving the system's overall stability. The proposed system and control approach are assessed using MATLAB/Simulink, and the results indicate its efficacy under various scenarios.

Original languageEnglish
Pages (from-to)602-607
Number of pages6
JournalRenewable Energy and Power Quality Journal
Volume20
DOIs
Publication statusPublished - Sep 2022

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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