Recent advancements in Power Electronics converters has led to the development of Multilevel Inverters that has proved to be one of the most promising solutions for the medium voltage, high power applications. Multilevel Inverters are considered to be the best available choice for the Grid-connected Photovoltaic Modules (PV) as they (PV Modules) comprise of several sources on the DC side. By the use of MLI, output with high quality and with less harmonic distortions can be obtained which can further be improved by increasing the level of the Multilevel Inverter. This paper presents a model of a 15-level Cascaded H-Bridge MLI interfaced suitably with a Boost Converter and PV arrays. The proposed 15-level inverter is modeled and simulated in MATLAB 2018a using Simulink and Sim Power System toolboxes. Passive filters for power quality improvement is also used at the output stage of Multilevel Inverter.