摘要：This paper presents an optimized design method for an LCL filter for a grid connected
photovoltaic system. This method is based on the Fast Fourier Transform (FFT) of the current
and voltage which provides the current ripples thus allowing to find the LCL filter passives
elements. A trick which consists of inductances fragmentation is adopted in order to reduce the
volume and the cost of the filter. Then, we do an analysis taking into account the impact of our
neighbors' consumption. This system is controlled by a decoupled active and reactive power
control ( PQ control) using a Phase Locked Loop (PLL) for the system’s synchronization.
Finally, we present and discuss the results of our simulation obtained by Matlab software
(simulink and simpowersystems) in order to highlight the proposed study.
