An Interleaved Buck Converter Based Active Power Filter for Photovoltaic Energy Application

Active power filter has drawn the maximum attraction among the researchers in the perspective of power quality improvement. However a conventional APF suffers from shoot through phenomena when the switches from the same leg are activated which results deterioration in harmonic compensation ability thereby leading in to system failure. Considering the aforementioned concerns, the proposed work is to develop a three phase interleaved buck converter based APF (InB APF) for solar photovoltaic application. The InB APF has the inherent ability of eradicating shoot through phenomena and is best suitable for the distribution sector where step down of voltage with high current having less ripple is the exigency. The modified synchronous reference frame theory (MSRF) and fuzzy tuned proportional integral (FPI) controller are used for the proposed system to obtain a better performance. A detailed circuit performance analysis has been done and to validate the theoretical analysis, simulation results are obtained in MATLAB/SIMULINK environment.

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