A Novel Current Controlled Technique with Feed Forward DC Voltage Regulator for Grid Connected Solar PV System

Solar energy is available in abundance and it is one of the most promising Renewable Energy Sources (RES) that can be used to produce electricity through Photovoltaic (PV) energy conversion process. Grid connected solar PV system is attracting more popularity due to the progress in the field of Power Electronic Converters (PEC) and various new control techniques. Different control techniques are used to control the Voltage Source Inverter (VSI) which is connected to the utility grid in order to achieve good power quality and to improve the dynamic response of the system. This paper proposes a novel current control technique with feed forward dc-voltage regulator for grid connected solar PV system. The feed forward dc-voltage regulator is used to remove the effect of nonlinear characteristics of the PV system and regulates the PV power and control the system dc link voltage. The performance index of the novel current control technique includes the low Total Harmonic Distortion (THD) level of the grid current and effective control of dc-link voltage. The proposed control technique is modeled and simulated in the MATLAB/Simulink location. Simulation results are presented to validate the performance of the proposed control technique.