Abstract
This paper has been studying two current control techniques for the two stages single-phase grid-tied photovoltaic (PV) inverter. These control techniques are Sinusoidal pulse width modulation (SPWM) and Hysteresis current. The whole structure of the grid-tied PV inverter has been studied in details for each of its parts. For comparison between the two techniques, the designed system has been tested under MATLAB/Simulink environment for different cases such as insolation and load variation. Results found that the Hysteresis current control method has a simple structure where it does not need PWM block, but it produces a higher total harmonic distortion (THD) as compared with the SPWM method
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