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Abstract: Many researchers have provided theoretical analysis of photoelectric (PV) energy systems connected to the electrical grid. This paper is concerned with experimental preparation in order to validate more and remains a major challenge in the field of practical research. In addition, the biggest problem with the PV energy system is how to get the utmost value out of the energy under a changing solar radiation. To take full power of the PV array output energy dependent on the change in solar radiation, Maximum Power Point Tracking (MPPT) techniques are used in the PV systems. The experimental and theoretical application of MPPT technology for grid connected PV system is suggested. This is done to track maximum energy under rapidly changing weather conditions in two states of PV radiation changes: the change of solar radiation in ramp profile and the width under change step. This article introduces the MPPT of a grid-connected PV system as a simulation and experimentally to track the speed of PV radiation change in different operating conditions. Through the results, an increase and correspondence in the output energy is shown using the MPPT technology between the experimental and theoretical side. Simulation results show the feasibility and power of control systems. Finally, a simulation result was compared with the experimental results for energy, current, and voltage coming out of the PV array as well as the electrical grid.

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