Feasibility Study of Modified Quasi Z Source Inverter for Solar PV Technology IJTSRD


In recent years, Photovoltaic PV power generation systems have always been considered as an alternative energy source that can lighten the rapid consumption of fossil fuels. The current developments in the photovoltaic materials and power converters has emerged this as promising technology. A PV inverter is widely used to convert the photovoltaic energy into electrical energy as most of the demands are in AC voltage, either for local loads or supplied into the grid. Power converter topologies employed in the PV power generation systems are mainly characterized by single or multi stage inverters. The Z-source inverter ZSI has a single stage structure to achieve the voltage buck boost character in a single power conversion stage. The energy storage device integrated to Quasi Z-source inverter QZSI topology eliminates need for an extra charging circuit. This upgraded topology acquires the operating characteristics from the traditional ZSI, along with the capability of operating under very low PV power conditions. Its main operating points are classified into two modes, the low PV power mode, where the battery is discharged and the high power mode, where the battery is charge up. An extended input power operating range is achieved since the lack of Photovoltaic power can be compensated by the battery. Hence we can conclude that QZSI realize boost buck function in a single-stage with improved reliability, lower component rating, constant DC current from source and good power quality showing an efficient method for the energy-stored PV power generation

Shwetha S Baligar | Chandrika S Kukanur | Chaitanya Krishna Jambotkar “Feasibility Study of Modified Quasi Z Source Inverter for Solar PV Technology”

Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-6 , October 2018,

URL: http://www.ijtsrd.com/papers/ijtsrd18839.pdf

Paper URL: http://www.ijtsrd.com/engineering/electrical-engineering/18839/feasibility-study-of-modified-quasi-z-source-inverter-for-solar-pv-technology/shwetha-s-baligar

call for paper Transport engineering, international journal Communication Engineering, ugc approved journals for engineering




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