Comparison between Fuzzy-logic MPPT and the Exciting Incremental Conductance Method under Fast Varying of Irradiance

Mohammed. S. Al-Mohamade, Hussein D. Al-Majali


In this research, a comparison between fuzzy logic (FL) and incremental conductance (INC) for photovoltaic module maximum power point tracking (MPPT) is presented. The mathematical analysis of the photovoltaic (PV) for the single-diode circuit and the DC/DC boost converter is conducted. The proposed PV system is simulated using MATLAB/Simulink software to test the performance of the proposed FL-MPPT technique under different irradiance levels. Moreover, the fast change profile for irradiance is applied to both techniques to show the dynamic response of the PV module for each technique. This paper aims to track the optimum power of the PV module under fast varying irradiance using FL and traditional INC methods. Simulation results have shown that the proposed FL technique's main novelty is achieved by presenting good agreement for the MPPT by achieving the peak power with a shorter time and lower ripple resolution than the INC technique. The simulation results also show that the PV module has the best performance and higher efficiency when operated with the FL-MPPT technique.


Keywords: maximum power point tracking, incremental conductance, fast varying irradiance, boost converter, fuzzy logic.

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