Design and Simulation of Grid Connected PV Cells using LC filter and MPPT System

Grid-connected photovoltaic (PV) system has gained momentum at an exponential rate in recent years. The intermittent nature of the PV system causing mismatches in demand and power generation is one of the major problems. In addition, the quality of the power supplied to the load and the redundant power injected into the grid along with the better dynamic performance are two other major issues of the grid-connected PV system. This paper presents a detailed analysis of a single-phase grid-connected photovoltaic (GCPV) system with a powerful control mechanism and improved power quality. This system uses a DC-DC converter which changes a variable DC voltage to a constant DC voltage. A Voltage Source Inverter (VSI) is used to convert DC voltage to AC voltage. In this paper, the PV array, boost transducer, maximum power point tracking (MPPT) control, bidirectional transducer, three-level NPC inverter, and their associated control system are designed and simulated in MATLAB/Simulink. Simulation results show that the injected current has 0.68% THD, faster system response, and the generated power matches the load demand.