Modeling and Control of a Single-phase Grid Connected Photovoltaic System
نویسندگان
چکیده
This paper at first presents a control algorithm for a single-phase grid-connected photovoltaic system in which an inverter designed for grid-connected photovoltaic arrays can synchronize a sinusoidal current output with a voltage grid. This paper presents modeling, controller design, and simulation study of a grid connected PV system. The overall configuration of the grid connected PV system is present. The main points discussed here are the MPP tracking algorithm, the synchronization of the inverter and the connection to the grid. Tracking the dc voltage and current allows MPP calculation which gives the inverter to function efficiently. We apply the MPP equations to the PV array model and watch the inverter input and output. In order to synchronize the simulated inverter to the grid the waveforms from the grid are applied to the pulse width modulation (PWM) input and drive appropriately the inverter’s IGBT’s. A Matlab/Simulink based simulation model is developed for the system. A Simulation results are presented to show the overall system performance.
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