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Low voltage ride through enhancement techniques on photovoltaic systems: A comprehensive review

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  • Selim, Fatma
  • Aly, Mokhtar
  • Megahed, Tamer F.
  • Abdelkader, Sobhy M.

Abstract

The adoption of renewable energy systems (RES) has rapidly emerged as the preferred alternative for replacing conventional fossil fuel sources and strengthening weak infrastructures. This shift is driven by the need to address the growing global energy demand and mitigate the intermittent nature of electricity generated by photovoltaic (PV) systems. Recently, numerous nations have established grid codes (GCs) to protect and oversee the functioning of PV systems linked to the grid, aiming to mitigate the potential impact of grid faults. Furthermore, modern technological advancements have facilitated the integration of low-voltage ride-through (LVRT) enhancement control techniques into PV inverters. These techniques aim to mitigate the issue of grid faults and the risk of equipment failure while enhancing the alignment of grid-connected PV systems with grid codes. This research aims to provide an in-depth and comprehensive review of the structural elements found in PV system architectures. This analysis encompasses an examination of various inverter topologies and control techniques that enhance LVRT capabilities. Additionally, a comparative study has been presented, encompassing a comprehensive examination of the benefits and drawbacks related to each of these control strategies. This evaluation is based on the performance attributes of complexity, reactive power injection, feed-in-tariff (FiT) mechanism, robustness, and power quality assessment. The reviewed LVRT control systems were evaluated based on these parameters.

Suggested Citation

  • Selim, Fatma & Aly, Mokhtar & Megahed, Tamer F. & Abdelkader, Sobhy M., 2026. "Low voltage ride through enhancement techniques on photovoltaic systems: A comprehensive review," Applied Energy, Elsevier, vol. 402(PB).
    • Handle: RePEc:eee:appene:v:402:y:2026:i:pb:s030626192501685x
    DOI: 10.1016/j.apenergy.2025.126955
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