# MAXIMUM POWER POINT TRACKING OF POLYCRYSTALLINE PHOTOVOLTAIC CELLS BASED ON OPTIMIZED ADAPTIVE DIFFERENTIAL CONDUCTANCE TECHNIQUE

MAXIMUM POWER POINT TRACKING OF POLYCRYSTALLINE PHOTOVOLTAIC CELLS BASED ON OPTIMIZED ADAPTIVE DIFFERENTIAL CONDUCTANCE TECHNIQUE

ABSTRACT

Maximum power point tracking of a polycrystalline Photovoltaic (PV) cell using an Optimized Adaptive Differential Conductance (OADC) technique was proposed in this work. This technique enhances the optimum power transfer from PV panel to the load by reducing the tracking latency and increasing convergence efficiency and speed unlike the conventional Incremental conductance. In this research work, current at maximum power point and voltage at maximum power point can be calculated without data sheet by using an algorithm developed for it. The performance of the algorithm developed in this work was evaluated by simulating the maximum power point tracking of PV cell at irradiance of 1000W/M2, 800W/M2, and 600W/M2 at 298k and some fixed temperatures. Based on the simulation results, it was observed that the impedance of the panel varied inversely as the irradiance while impedance of the load is not affected by irradiance. This technique was also validated by comparison with conventional incremental conductance technique. The resultant conductance of this technique is 0.0030 mho at maximum power where as conventional has -0.0418 mho which is less than zero. This technique has a relative improvement of 6.0558% compared to conventional incremental conductance technique. The simulation was done using Matrix Laboratory (MATLAB).

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