ANALYSIS AND SIMULATION OF STANDALONE PV BASED INVERTER

This paper is related to the off-grid inverter system. Inverters are used to convert the direct current to alternating current. An inverter is not an energy producer but it's a power converter that converts DC supply from batteries or fuel cells to AC supply. Almost in all the major applications, inverters are fed with DC source which is rectified from the electricity supply grid. But, the supply electricity from the grid is not available all the time during the day because of the practical problems like increased industrial need and growth of population in the country. Off-grid inverters otherwise known as standalone inverters are those that charge batteries using supply from the other sources of electricity like solar energy, wind energy. These sources are reliable, eco-friendly and they provide supply continuously. The objective of this paper is to design and simulate a standalone PV based inverter system which converts solar energy to electric energy and then invert it. This simulation consists of the conversion of solar energy to electrical energy, by stepping up of obtained output voltage to desired level using the Interleaved Boost Converter configuration, inverting it to Alternating form and then filtering it to avoid unwanted power quality issues.