COMPARATIVE STUDY OF P&O AND INCREMENTAL CONDUCTANCE METHOD FOR PV SYSTEM BASED ON THEVENIN EQUIVALENT CIRCUIT MODEL
Abstract
For maximum power point tracking (MPPT) and power grid investigations, a photovoltaic (PV) source model is required. Environment Temperature, solar irradiation, and load (RL) all have an impact on the output power of (PV) arrays with nonlinear properties. To optimize the provided possible power, for photovoltaic (PV) power systems, numerous maximum power point tracking (MPPT) strategies have been researched and developed. Thevenin’s equivalent model for a (PV) source is designed by piecewise linearization of the diode characteristic. Thevenin model is compared by using different MPPT algorithm methods perturb and observe (P&O) and Incremental conductance (INC) using MATLAB simulation program. The simulated PV system consists of (PV panels, a DC-DC boost converter, and an MPPT controller) and the comparison between the two MPPT algorithm methods (P&O and INC) to maximize the obtained solar power. The simulation results showed that Thevenin’s equivalent model of (PV) produces a voltage-current characteristic that represents the PV source operation fairly well.
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