Citation :

Bright Olileaya Boniface, Mehmet Kuşaf, "Comparative Analysis of Monocrystalline vs. Polycrystalline PV Performance in Grid-Tied Systems: Efficiency, Losses, and MPPT Optimisation Using Incremental Conductance with Integral Regulator," International Journal of Engineering Trends and Technology (IJETT), vol. 73, no. 12, pp. 72-83, 2025. Crossref, https://doi.org/10.14445/22315381/IJETT-V73I12P107

Abstract

This research compares the performance of monocrystalline and polycrystalline Photovoltaic (PV) module systems in grid-connected systems using the improved Incremental Conductance with Integral Regulator (IC-IR) Maximum Power Point Tracker (MPPT) algorithm. While many MPPT algorithms have been developed to optimise PV system performance, limited research has not compared their effectiveness across different PV system types when operating in grid-tied PV systems. To fill this knowledge gap, a 120 kW PV system was modelled and simulated in MATLAB/Simulink across a range of irradiance levels from 200 W/m² to 1000 W/m². The IC-IR algorithm used is an improvement to the conventional incremental conductance MPPT method; it includes an integral regulator to improve dynamic response and remove steady-state oscillations. The results indicate that monocrystalline PV modules achieved a slight increase in peak power output (118.32 kW) compared to polycrystalline PV modules (118.30 kW), operated at 214 V and 192 V, respectively. Additionally, the results showed that polycrystalline panels had a higher average efficiency (97.0–98.9%) than monocrystalline panels (96.7–99.1%) across the varying irradiance levels tested. Finally, the IC-IR method reduced MPPT voltage oscillations by 37% and achieved a steady-state error of less than 2%. The results of this study demonstrate the ability of the IC-IR method to accurately and reliably track MPPT for both monocrystalline and polycrystalline PV modules within a grid-connected PV system and can be applied to optimise the PV module type selected and the design of inverters used in renewable energy applications.

Keywords

Photovoltaic System, MPPT, Incremental Conductance, Monocrystalline, Polycrystalline.

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