Özet:

Turkey is a country with a high potential for renewable solar energy. The use of electrical energy obtained from photovoltaic panel systems has increased in our country in recent years. Our government also gives incentives on this subject, but since the energy used in household loads is electricity from the grid, a constant voltage should be obtained at the output of photovoltaic systems. A fluctuation or harmonics that may occur in the energy obtained at the system output damage the house loads and the grid. In this study, a battery-assisted photovoltaic power supply is modeled and simulated for a modeled househeld load application. MPPT is designed against load changes that may occur in the system. In MPPT design, the relationship between power and current has been considered. Thanks to the method used, the battery and the fed loads in the system are protected. DC / AC inverter is used at the output of fixed busbar voltage. Thanks to the PI control system, charge or discharge current from the battery system group is used. Whole system photovoltaic panel, electrical loads, DC / DC boost converter and DC / AC inverter converter, control structures and grid model were modeled in the MATLAB / Simülink simulation program and the system was verified with the results. A constant voltage was obtained at the AC bus output and the fluctuations on the voltage were removed with the LC filter.

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