PV System-based Interleaved Converter for Grid System

An effective Maximum Power Point Tracking (MPPT) technology is critical for increasing the efficiency of a Photovoltaic (PV) production system. Due to various weather intermittency, the solar PV system does indeed have a non-linear output feature, which has a significant effect on the total PV system output. Non-linear I-V and P-V characteristics are provided by solar PV. As either a consequence, extracting the most power from solar PV is tough. So, an MPPT-controlled interleaved converter is developed in this paper for a grid system. The interleaved boost converter (IBC) has a voltage gain much larger than the traditional boost topology and is magnetically connected to a voltage multiplier circuit. The MPPT controller employs perturb & observe (P&O) algorithm which is more efficient and easier to understand. The PV system is connected to the grid by a voltage source inverter (VSI) with a filter circuit. The model is simulated in MATLAB/Simulink and the performance of the converters is verified. Total harmonic distortion (THD) analysis of the grid side voltage is evaluated.