Analysis and Simulation of Novel Multi level Inverter Topology for Grid Interconnection of PV Systems
Abstract
Photovoltaic energy is a wide kind of green energy, because photo voltaic solar are pollution free, easily erectable, and limitless. Photovoltaic systems are mostly used as they are light, clean and easily installable. Normally PV cells converts sunlight into electricity in the form of dc A high performance on these systems is needed to make the most of energy produced by solar cells. Also, there must be a constant adaptation due to the continuous variation of power production. : In any PV based system, the inverter is a critical component responsible for the control of electricity flow between the dc source, and loads or grid. This paper presents a solar PV generation system integrated to the grid. the comparative operation of inverter topologies which are the conventional two level inverters and multilevel inverter topology to reduce total harmonic distortions in grid voltage and electromagnetic interference. Unique features of multi-level converters have recently nominated them as significant alternatives for solid-state power converting units, even in the low and medium power range. The fact that multilevel converters need several DC sources in the DC side makes them attractive for photovoltaic (PV) applications. This project presents a new control strategy to control cascaded multilevel converters in a multi-string configuration for single phase grid connected system. In extension the proposed concept can be implemented for new multilevel inverter concept by using MATLAB/SIMULATION software.
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